{"id":"CVE-2026-28810","aliases":["AZL-82058","DEBIAN-CVE-2026-28810","EEF-CVE-2026-28810","EUVD-2026-19582","GHSA-v884-5jg5-whj8","SUSE-SU-2026:21374-1","SUSE-SU-2026:3579-1","SUSE-SU-2026:3645-1","UBUNTU-CVE-2026-28810","USN-8901-1","openSUSE-SU-2026:10947-1","openSUSE-SU-2026:20607-1"],"status":"published","title":"Predictable DNS Transaction IDs Enable Cache Poisoning in Built-in Resolver","description":"Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel (inet_res, inet_db modules) allows DNS Cache Poisoning.\n\nThe built-in DNS resolver (inet_res) uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization. Response validation relies almost entirely on this ID, making DNS cache poisoning practical for an attacker who can observe one query or predict the next ID. This conflicts with RFC 5452 recommendations for mitigating forged DNS answers.\n\ninet_res is intended for use in trusted network environments and with trusted recursive resolvers. Earlier documentation did not clearly state this deployment assumption, which could lead users to deploy the resolver in environments where spoofed DNS responses are possible.\n\nThis vulnerability is associated with program files lib/kernel/src/inet_db.erl and lib/kernel/src/inet_res.erl.\n\nThis issue affects OTP from OTP 17.0 before OTP 28.4.2, OTP 27.3.4.10 and OTP 26.2.5.19, corresponding to kernel from 3.0 before 10.6.2, 10.2.7.4 and 9.2.4.11.","severity":{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00274,"percentile":0.19972,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-340"],"published":"2026-04-07T07:50:11Z","modified":"2026-11-05T14:17:20Z","fixes":[{"ecosystem":"Debian:13","package":"erlang","fixed_in":["1:27.3.4.1+dfsg-1+deb13u3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"erlang","fixed_in":["1:27.3.4.10+dfsg-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"erlang","fixed_in":["1:24.2.1+dfsg-1ubuntu0.8"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"erlang","fixed_in":["1:25.3.2.8+dfsg-1ubuntu4.8"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"erlang","fixed_in":["1:27.3.4.6+dfsg-1ubuntu0.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure 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Notes","web","report"]},{"url":"https://github.com/erlang/otp/commit/36f23c9d2cc54afe83671dd7343596d7972839a5","tags":["patch","Patch","fix","report"]},{"url":"https://github.com/erlang/otp/commit/dd15e8eb03548c5e55e9915f0e91389ec6bad9fd","tags":["patch","Patch","fix","report"]},{"url":"https://github.com/erlang/otp/commit/b057a9d995017b1be50d6dc02edd52382f3231b8","tags":["patch","Patch","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28810","tags":["web","advisory"]},{"url":"https://github.com","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28810.json","tags":["advisory"]},{"url":"https://github.com/erlang/otp","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-28810","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202621374-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1258663","tags":["report"]},{"url":"https://bugzilla.suse.com/1259681","tags":["report"]},{"url":"https://bugzilla.suse.com/1259682","tags":["report"]},{"url":"https://bugzilla.suse.com/1259687","tags":["report"]},{"url":"https://bugzilla.suse.com/1261726","tags":["report"]},{"url":"https://bugzilla.suse.com/1261728","tags":["report"]},{"url":"https://bugzilla.suse.com/1261734","tags":["report"]},{"url":"https://bugzilla.suse.com/1262288","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-21620","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-23941","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-23942","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-23943","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-28808","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-28810","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-32144","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263579-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1266449","tags":["report"]},{"url":"https://bugzilla.suse.com/1266466","tags":["report"]},{"url":"https://bugzilla.suse.com/1268139","tags":["report"]},{"url":"https://bugzilla.suse.com/1268141","tags":["report"]},{"url":"https://bugzilla.suse.com/1268142","tags":["report"]},{"url":"https://bugzilla.suse.com/1268146","tags":["report"]},{"url":"https://bugzilla.suse.com/1268163","tags":["report"]},{"url":"https://bugzilla.suse.com/1268164","tags":["report"]},{"url":"https://bugzilla.suse.com/1270245","tags":["report"]},{"url":"https://bugzilla.suse.com/1270246","tags":["report"]},{"url":"https://bugzilla.suse.com/1270247","tags":["report"]},{"url":"https://bugzilla.suse.com/1270250","tags":["report"]},{"url":"https://bugzilla.suse.com/1270253","tags":["report"]},{"url":"https://bugzilla.suse.com/1270258","tags":["report"]},{"url":"https://bugzilla.suse.com/1272908","tags":["report"]},{"url":"https://bugzilla.suse.com/1272909","tags":["report"]},{"url":"https://bugzilla.suse.com/1272910","tags":["report"]},{"url":"https://bugzilla.suse.com/1272911","tags":["report"]},{"url":"https://bugzilla.suse.com/1272913","tags":["report"]},{"url":"https://bugzilla.suse.com/1272914","tags":["report"]},{"url":"https://bugzilla.suse.com/1272915","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42789","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42790","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42792","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-47078","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-48855","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-48856","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-48858","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-48860","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-49759","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-49760","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-53422","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-54886","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-54887","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-54891","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55737","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55950","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55952","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55953","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-58227","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59250","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59251","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263645-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-28810","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-28810","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8901-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-4748","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2025-26618","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2025-30211","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-21620","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-23942","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-23943","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-28808","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-32144","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-32147","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-42789","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-42790","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-42791","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-47078","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-48855","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-48856","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-48858","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-48860","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-49759","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-49760","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-53422","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-54886","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-54887","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-54891","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55950","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55952","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-65634","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-68956","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-74994","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-89422","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2025-4748","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-48038","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-48039","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-32147","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42791","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-28810","title":"Predictable DNS Transaction IDs Enable Cache Poisoning in Built-in Resolver","description":"Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel (inet_res, inet_db modules) allows DNS Cache Poisoning.\n\nThe built-in DNS resolver (inet_res) uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization. Response validation relies almost entirely on this ID, making DNS cache poisoning practical for an attacker who can observe one query or predict the next ID. This conflicts with RFC 5452 recommendations for mitigating forged DNS answers.\n\ninet_res is intended for use in trusted network environments and with trusted recursive resolvers. Earlier documentation did not clearly state this deployment assumption, which could lead users to deploy the resolver in environments where spoofed DNS responses are possible.\n\nThis vulnerability is associated with program files lib/kernel/src/inet_db.erl and lib/kernel/src/inet_res.erl.\n\nThis issue affects OTP from OTP 17.0 before OTP 28.4.2, OTP 27.3.4.10 and OTP 26.2.5.19, corresponding to kernel from 3.0 before 10.6.2, 10.2.7.4 and 9.2.4.11.","status":"published","published":"2026-04-07T07:50:11.072Z","modified":"2026-07-24T14:16:14.097Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-340"],"updated_at":"2026-11-02T14:20:02.290587Z"}],"euvd":[{"id":"EUVD-2026-19582","description":"Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel (inet_res, inet_db modules) allows DNS Cache Poisoning.\n\nThe built-in DNS resolver (inet_res) uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization. Response validation relies almost entirely on this ID, making DNS cache poisoning practical for an attacker who can observe one query or predict the next ID. This conflicts with RFC 5452 recommendations for mitigating forged DNS answers.\n\ninet_res is intended for use in trusted network environments and with trusted recursive resolvers. Earlier documentation did not clearly state this deployment assumption, which could lead users to deploy the resolver in environments where spoofed DNS responses are possible.\n\nThis vulnerability is associated with program files lib/kernel/src/inet_db.erl and lib/kernel/src/inet_res.erl.\n\nThis issue affects OTP from OTP 17.0 before OTP 28.4.2, OTP 27.3.4.10 and OTP 26.2.5.19, corresponding to kernel from 3.0 before 10.6.2, 10.2.7.4 and 9.2.4.11.","status":"published","published":"2026-04-07T07:50:11Z","modified":"2026-07-24T14:16:14Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:19:40.671085Z"}],"nvd":[{"id":"CVE-2026-28810","description":"Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel (inet_res, inet_db modules) allows DNS Cache Poisoning.\n\nThe built-in DNS resolver (inet_res) uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization. Response validation relies almost entirely on this ID, making DNS cache poisoning practical for an attacker who can observe one query or predict the next ID. This conflicts with RFC 5452 recommendations for mitigating forged DNS answers.\n\ninet_res is intended for use in trusted network environments and with trusted recursive resolvers. Earlier documentation did not clearly state this deployment assumption, which could lead users to deploy the resolver in environments where spoofed DNS responses are possible.\n\nThis vulnerability is associated with program files lib/kernel/src/inet_db.erl and lib/kernel/src/inet_res.erl.\n\nThis issue affects OTP from OTP 17.0 before OTP 28.4.2, OTP 27.3.4.10 and OTP 26.2.5.19, corresponding to kernel from 3.0 before 10.6.2, 10.2.7.4 and 9.2.4.11.","status":"published","published":"2026-04-07T09:16:20.473Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-340"],"updated_at":"2026-11-02T14:12:13.1424Z"}],"osv":[{"id":"CVE-2026-28810","title":"Predictable DNS Transaction IDs Enable Cache Poisoning in Built-in Resolver","description":"Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel (inet_res, inet_db modules) allows DNS Cache Poisoning.\n\nThe built-in DNS resolver (inet_res) uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization. Response validation relies almost entirely on this ID, making DNS cache poisoning practical for an attacker who can observe one query or predict the next ID. This conflicts with RFC 5452 recommendations for mitigating forged DNS answers.\n\ninet_res is intended for use in trusted network environments and with trusted recursive resolvers. Earlier documentation did not clearly state this deployment assumption, which could lead users to deploy the resolver in environments where spoofed DNS responses are possible.\n\nThis vulnerability is associated with program files lib/kernel/src/inet_db.erl and lib/kernel/src/inet_res.erl.\n\nThis issue affects OTP from OTP 17.0 before OTP 28.4.2, OTP 27.3.4.10 and OTP 26.2.5.19, corresponding to kernel from 3.0 before 10.6.2, 10.2.7.4 and 9.2.4.11.","status":"published","published":"2026-04-07T07:50:11.072Z","modified":"2026-10-28T02:31:03.669022234Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-340"],"updated_at":"2026-11-02T15:45:00.530889Z"},{"id":"DEBIAN-CVE-2026-28810","description":"Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel (inet_res, inet_db modules) allows DNS Cache Poisoning.  The built-in DNS resolver (inet_res) uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization. Response validation relies almost entirely on this ID, making DNS cache poisoning practical for an attacker who can observe one query or predict the next ID. This conflicts with RFC 5452 recommendations for mitigating forged DNS answers.  inet_res is intended for use in trusted network environments and with trusted recursive resolvers. Earlier documentation did not clearly state this deployment assumption, which could lead users to deploy the resolver in environments where spoofed DNS responses are possible.  This vulnerability is associated with program files lib/kernel/src/inet_db.erl and lib/kernel/src/inet_res.erl.  This issue affects OTP from OTP 17.0 before OTP 28.4.2, OTP 27.3.4.10 and OTP 26.2.5.19, corresponding to kernel from 3.0 before 10.6.2, 10.2.7.4 and 9.2.4.11.","status":"published","published":"2026-04-07T09:16:20.473Z","modified":"2026-10-27T10:00:32.276216281Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T15:45:53.877573Z"},{"id":"EEF-CVE-2026-28810","title":"Predictable DNS Transaction IDs Enable Cache Poisoning in Built-in Resolver","description":"## Summary\n\nGeneration of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel (inet\\_res, inet\\_db modules) allows DNS Cache Poisoning.\n\nThe built-in DNS resolver (inet\\_res) uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization. Response validation relies almost entirely on this ID, making DNS cache poisoning practical for an attacker who can observe one query or predict the next ID. This conflicts with RFC 5452 recommendations for mitigating forged DNS answers.\n\ninet\\_res is intended for use in trusted network environments and with trusted recursive resolvers. Earlier documentation did not clearly state this deployment assumption, which could lead users to deploy the resolver in environments where spoofed DNS responses are possible.\n\nThis vulnerability is associated with program files lib/kernel/src/inet\\_db.erl and lib/kernel/src/inet\\_res.erl.\n\nThis issue affects OTP from OTP 17.0 before OTP 28.4.2, OTP 27.3.4.10 and OTP 26.2.5.19, corresponding to kernel from 3.0 before 10.6.2, 10.2.7.4 and 9.2.4.11.\n\n## Workarounds\n\nInstall the Erlang nodes in a trusted network shielded from DNS reply spoofing by firewalls, and configure the inet\\_res resolver to only talk to trusted recursive name servers within that network.\n\n## Configurations\n\nThe application must use inet\\_res for DNS resolution, either by configuring the lookup method to include dns in the kernel inet configuration, or by calling inet\\_res functions directly. The default Erlang/OTP configuration uses native OS resolution and is not affected.","status":"published","published":"2026-04-07T07:50:11.072Z","modified":"2026-09-08T03:45:02.735056201Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-340"],"updated_at":"2026-11-02T15:46:33.047032Z"},{"id":"UBUNTU-CVE-2026-28810","description":"Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel (inet_res, inet_db modules) allows DNS Cache Poisoning. The built-in DNS resolver (inet_res) uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization. Response validation relies almost entirely on this ID, making DNS cache poisoning practical for an attacker who can observe one query or predict the next ID. This conflicts with RFC 5452 recommendations for mitigating forged DNS answers. inet_res is intended for use in trusted network environments and with trusted recursive resolvers. Earlier documentation did not clearly state this deployment assumption, which could lead users to deploy the resolver in environments where spoofed DNS responses are possible. This vulnerability is associated with program files lib/kernel/src/inet_db.erl and lib/kernel/src/inet_res.erl. This issue affects OTP from OTP 17.0 before OTP 28.4.2, OTP 27.3.4.10 and OTP 26.2.5.19, corresponding to kernel from 3.0 before 10.6.2, 10.2.7.4 and 9.2.4.11.","status":"published","published":"2026-04-07T09:16:00Z","modified":"2026-10-08T19:47:08.981522968Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"},{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T16:56:08.726452Z"},{"id":"AZL-82058","title":"CVE-2026-28810 affecting package kernel 6.6.161.1-1","description":"Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel (inet_res, inet_db modules) allows DNS Cache Poisoning.\n\nThe built-in DNS resolver (inet_res) uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization. Response validation relies almost entirely on this ID, making DNS cache poisoning practical for an attacker who can observe one query or predict the next ID. This conflicts with RFC 5452 recommendations for mitigating forged DNS answers.\n\ninet_res is intended for use in trusted network environments and with trusted recursive resolvers. Earlier documentation did not clearly state this deployment assumption, which could lead users to deploy the resolver in environments where spoofed DNS responses are possible.\n\nThis vulnerability is associated with program files lib/kernel/src/inet_db.erl and lib/kernel/src/inet_res.erl.\n\nThis issue affects OTP from OTP 17.0 before OTP 28.4.2, OTP 27.3.4.10 and OTP 26.2.5.19, corresponding to kernel from 3.0 before 10.6.2, 10.2.7.4 and 9.2.4.11.","status":"published","published":"2026-04-07T09:16:20Z","modified":"2026-11-05T14:17:20.484095612Z","updated_at":"2026-11-05T16:41:24.988217Z"},{"id":"openSUSE-SU-2026:10947-1","title":"erlang27-27.1.3-2.1 on GA media","description":"These are all security issues fixed in the erlang27-27.1.3-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-06-03T00:00:00Z","modified":"2026-06-04T09:00:08.489232736Z","updated_at":"2026-11-02T16:58:38.95195Z"},{"id":"openSUSE-SU-2026:20607-1","title":"Security update for erlang","description":"This update for erlang fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2026-21620: improper isolation and compartmentalization can lead to TFTP relative path traversal and remote\n  arbitrary reads/writes (bsc#1258663).\n- CVE-2026-23941: improper handling of duplicate Content-Length headers in Erlang OTP can lead to HTTP request\n  smuggling (bsc#1259687).\n- CVE-2026-23942: improper limitation of a pathname to a restricted directory in the SFTP server can lead to path\n  traversal (bsc#1259681).\n- CVE-2026-23943: improper handling of highly compressed data in Erlang OTP ssh can lead to denial of service\n  (bsc#1259682).\n- CVE-2026-28808: incorrect authorization can lead to unauthenticated access to protected CGI scripts (bsc#1261728).\n- CVE-2026-28810: predictable DNS transaction IDs can lead to DNS cache poisoning (bsc#1261726).\n- CVE-2026-32144: missing signature verification can lead to OCSP authorization bypass and information disclosure\n  (bsc#1261734).\n\nOther updates and bugfixes:\n\n- jinterface: allow to build determenistic OtpErlang.jar (bsc#1262288).\n","status":"published","published":"2026-04-22T10:52:20Z","modified":"2026-04-24T08:16:29.068648Z","updated_at":"2026-11-02T16:58:41.463445Z"},{"id":"SUSE-SU-2026:21374-1","title":"Security update for erlang","description":"This update for erlang fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2026-21620: improper isolation and compartmentalization can lead to TFTP relative path traversal and remote\n  arbitrary reads/writes (bsc#1258663).\n- CVE-2026-23941: improper handling of duplicate Content-Length headers in Erlang OTP can lead to HTTP request\n  smuggling (bsc#1259687).\n- CVE-2026-23942: improper limitation of a pathname to a restricted directory in the SFTP server can lead to path\n  traversal (bsc#1259681).\n- CVE-2026-23943: improper handling of highly compressed data in Erlang OTP ssh can lead to denial of service\n  (bsc#1259682).\n- CVE-2026-28808: incorrect authorization can lead to unauthenticated access to protected CGI scripts (bsc#1261728).\n- CVE-2026-28810: predictable DNS transaction IDs can lead to DNS cache poisoning (bsc#1261726).\n- CVE-2026-32144: missing signature verification can lead to OCSP authorization bypass and information disclosure\n  (bsc#1261734).\n\nOther updates and bugfixes:\n\n- jinterface: allow to build determenistic OtpErlang.jar (bsc#1262288).\n","status":"published","published":"2026-04-22T11:46:09Z","modified":"2026-04-29T18:23:58.002335Z","updated_at":"2026-11-02T15:54:02.312556Z"},{"id":"SUSE-SU-2026:3579-1","title":"Security update for erlang26","description":"This update for erlang26 fixes the following issues:\n\n- CVE-2026-28810: predictable DNS transaction IDs can cause DNS cache poisoning (bsc#1261726).\n- CVE-2026-42789: `public_key` application accepts non-CA certificates as intermediate issuers and this enables chain\n  forgery (bsc#1266449).\n- CVE-2026-42790: Name constraints and `Subject CommonName` fallback in TLS hostname verification allows for certificate\n  forgery by MITM attacker (bsc#1266466).\n- CVE-2026-42792: permanent `epmd` DoS via connection slot exhaustion due to improper handling of exceptional\n  conditions (bsc#1272908).\n- CVE-2026-47078: relative path traversal in `zip:unzip/zip:extract` via `check_dir_level` depth-counter bypass\n  (bsc#1272909).\n- CVE-2026-48855: SFTP `READLINK` response leaks absolute backend filesystem path when root is configured (bsc#1268139).\n- CVE-2026-48856: `httpc` leaks `Authorization` headers to cross-origin redirect targets (bsc#1268141).\n- CVE-2026-48858: server-side request forgery allows FTP bounce attacks and SSRF via an unvalidated `PASV` response IP\n  address (bsc#1268142).\n- CVE-2026-48860: `ssl` (`inet_tls_dist` module) allows unauthenticated bypass of the distribution-over-TLS LAN\n  allowlist (bsc#1268146).\n- CVE-2026-49759: unbounded stack buffer overflow in SCTP error cause parsing in `inet_drv` (bsc#1268163).\n- CVE-2026-49760: stack buffer overflow in `ei_s_print_term` at very large integer (bsc#1268164).\n- CVE-2026-53422: SFTP `REALPATH` path-existence oracle allows filesystem enumeration outside configured root\n  (bsc#1270245).\n- CVE-2026-54886: SSH SFTP server denial of service via extended channel data infinite loop (bsc#1270246).\n- CVE-2026-54887: use of default cryptographic key allows predictable DTLS cookie computation during the startup window\n  (bsc#1270247).\n- CVE-2026-54891: plaintext injection towards (D)TLS client during handshake (bsc#1270250).\n- CVE-2026-55737: heap pointer corruption via signed/unsigned mismatch in `LARGE_TUPLE_EXTP` decoding in `erts`\n  external term format decoder (bsc#1272910).\n- CVE-2026-55950: time-of-check time-of-use race condition allows an unauthenticated remote attacker to crash all active\n  DTLS sessions on a listener (bsc#1270253).\n- CVE-2026-55952: missing validation allows for DoS of the TLS-1.3 server when clients send a malformed `ClientHello`\n  with mismatched PSK identity and binder list lengths (bsc#1270258).\n- CVE-2026-55953: TLS 1.2 and DTLS clients accept unoffered anonymous cipher suites and allow for server authentication\n  bypass (bsc#1272911).\n- CVE-2026-58227: TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain\n  (bsc#1272913).\n- CVE-2026-59250: `megaco` flex scanner buffer overflow via oversized property parm name (bsc#1272914).\n- CVE-2026-59251: denial of service via exponential certificate policy tree growth in path validation (bsc#1272915).\n","status":"published","published":"2026-08-11T14:05:54Z","modified":"2026-08-12T10:45:06.178233719Z","updated_at":"2026-11-02T15:54:05.392906Z"},{"id":"SUSE-SU-2026:3645-1","title":"Security update for erlang","description":"This update for erlang fixes the following issues:\n\n- CVE-2026-28810: predictable DNS transaction IDs can cause DNS cache poisoning (bsc#1261726).\n- CVE-2026-42789: `public_key` application accepts non-CA certificates as intermediate issuers and this enables chain\n  forgery (bsc#1266449).\n- CVE-2026-42790: Name constraints and `Subject CommonName` fallback in TLS hostname verification allows for certificate\n  forgery by MITM attacker (bsc#1266466).\n- CVE-2026-42792: permanent `epmd` DoS via connection slot exhaustion due to improper handling of exceptional\n  conditions (bsc#1272908).\n- CVE-2026-47078: relative path traversal in `zip:unzip/zip:extract` via `check_dir_level` depth-counter bypass\n  (bsc#1272909).\n- CVE-2026-48855: SFTP `READLINK` response leaks absolute backend filesystem path when root is configured (bsc#1268139).\n- CVE-2026-48856: `httpc` leaks `Authorization` headers to cross-origin redirect targets (bsc#1268141).\n- CVE-2026-48858: server-side request forgery allows FTP bounce attacks and SSRF via an unvalidated `PASV` response IP\n  address (bsc#1268142).\n- CVE-2026-49759: unbounded stack buffer overflow in SCTP error cause parsing in `inet_drv` (bsc#1268163).\n- CVE-2026-49760: stack buffer overflow in `ei_s_print_term` at very large integer (bsc#1268164).\n- CVE-2026-53422: SFTP `REALPATH` path-existence oracle allows filesystem enumeration outside configured root\n  (bsc#1270245).\n- CVE-2026-54886: SSH SFTP server denial of service via extended channel data infinite loop (bsc#1270246).\n- CVE-2026-54887: use of default cryptographic key allows predictable DTLS cookie computation during the startup window\n  (bsc#1270247).\n- CVE-2026-54891: plaintext injection towards (D)TLS client during handshake (bsc#1270250).\n- CVE-2026-55737: heap pointer corruption via signed/unsigned mismatch in `LARGE_TUPLE_EXTP` decoding in `erts`\n  external term format decoder (bsc#1272910).\n- CVE-2026-55952: missing validation allows for DoS of the TLS-1.3 server when clients send a malformed `ClientHello`\n  with mismatched PSK identity and binder list lengths (bsc#1270258).\n- CVE-2026-55953: TLS 1.2 and DTLS clients accept unoffered anonymous cipher suites and allow for server authentication\n  bypass (bsc#1272911).\n- CVE-2026-58227: TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain\n  (bsc#1272913).\n- CVE-2026-59250: `megaco` flex scanner buffer overflow via oversized property parm name (bsc#1272914).\n","status":"published","published":"2026-08-18T18:14:04Z","modified":"2026-08-21T09:15:05.747880529Z","updated_at":"2026-11-02T15:54:05.392906Z"},{"id":"USN-8901-1","title":"erlang vulnerabilities","description":"Wander Nauta discovered that Erlang incorrectly handled absolute paths when\nextracting zip archives. An attacker could possibly use this issue to write\narbitrary files outside of the intended directory. This issue only affected\nUbuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2025-4748)\n\nIt was discovered that the Erlang SFTP server did not properly limit the\nsize of packets. A remote attacker could possibly use this issue to cause\nErlang to use excessive resources, leading to a denial of service. This\nissue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and\nUbuntu 18.04 LTS. (CVE-2025-26618)\n\nIt was discovered that the Erlang SSH server did not properly limit the\nlength of algorithm names in key exchange messages. A remote attacker could\npossibly use this issue to cause Erlang to use excessive resources, leading\nto a denial of service. This issue only affected Ubuntu 14.04 LTS,\nUbuntu 16.04 LTS, and Ubuntu 18.04 LTS. (CVE-2025-30211)\n\nIt was discovered that the Erlang TFTP server incorrectly handled certain\nfile paths. A remote attacker could possibly use this issue to access files\noutside of the intended directory. (CVE-2026-21620)\n\nIt was discovered that the Erlang SFTP server incorrectly validated paths\nagainst the configured root directory. An authenticated user could possibly\nuse this issue to access files outside of the root directory.\n(CVE-2026-23942)\n\nIt was discovered that the Erlang SSH server enabled zlib compression by\ndefault and did not limit the size of decompressed data. A remote attacker\ncould possibly use this issue to cause Erlang to use excessive resources,\nleading to a denial of service. (CVE-2026-23943)\n\nIt was discovered that the Erlang HTTP server incorrectly applied directory\naccess controls to CGI scripts served via script aliases. A remote attacker\ncould possibly use this issue to bypass authentication and access protected\nCGI scripts. (CVE-2026-28808)\n\nIt was discovered that the Erlang DNS resolver used predictable transaction\nIDs and did not randomize source ports. A remote attacker could possibly\nuse this issue to perform DNS cache poisoning attacks. This issue only\naffected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.\n(CVE-2026-28810)\n\nIt was discovered that Erlang did not verify the signatures of designated\nOCSP responder certificates. A remote attacker could possibly use this\nissue to forge OCSP responses and bypass certificate revocation checks.\nThis issue only affected Ubuntu 26.04 LTS. (CVE-2026-32144)\n\nIt was discovered that the Erlang SFTP server incorrectly handled file\nattribute changes on open file handles. An authenticated user could\npossibly use this issue to modify the attributes of files outside of the\nroot directory. (CVE-2026-32147)\n\nIt was discovered that Erlang incorrectly allowed non-CA certificates to\nact as intermediate certificate issuers. A remote attacker could possibly\nuse this issue to forge certificate chains. (CVE-2026-42789)\n\nIt was discovered that Erlang incorrectly handled DNS name constraints\nduring hostname verification. A remote attacker could possibly use this\nissue to bypass certificate validation. This issue only affected\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and\nUbuntu 26.04 LTS. (CVE-2026-42790)\n\nIt was discovered that Erlang did not check the validity period of OCSP\nresponder certificates. A remote attacker could possibly use this issue to\nforge OCSP responses using an expired responder certificate. This issue\nonly affected Ubuntu 26.04 LTS. (CVE-2026-42791)\n\nIt was discovered that Erlang incorrectly handled relative paths when\nextracting zip archives. An attacker could possibly use this issue to write\narbitrary files outside of the intended directory. This issue only affected\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and\nUbuntu 26.04 LTS. (CVE-2026-47078)\n\nIt was discovered that the Erlang SFTP server exposed absolute paths when\nreading symbolic links. An authenticated user could possibly use this issue\nto obtain sensitive information. (CVE-2026-48855)\n\nIt was discovered that the Erlang HTTP client forwarded authorization\nheaders on cross-origin redirects. A malicious HTTP server could possibly\nuse this issue to obtain sensitive information. (CVE-2026-48856)\n\nIt was discovered that the Erlang FTP client did not validate the IP\naddress in passive mode responses. A malicious FTP server could possibly\nuse this issue to perform server-side request forgery attacks.\n(CVE-2026-48858)\n\nIt was discovered that Erlang checked the local address instead of the peer\naddress when enforcing the allowlist for distribution over TLS. A remote\nattacker could possibly use this issue to bypass access restrictions. This\nissue only affected Ubuntu 26.04 LTS. (CVE-2026-48860)\n\nIt was discovered that Erlang incorrectly handled certain SCTP ERROR\nchunks, leading to a buffer overflow. A remote attacker could possibly use\nthis issue to cause Erlang to crash, resulting in a denial of service.\n(CVE-2026-49759)\n\nIt was discovered that the Erlang erl_interface library incorrectly handled\nprinting very large integers, leading to a buffer overflow. An attacker\ncould possibly use this issue to cause Erlang to crash or execute arbitrary\ncode. (CVE-2026-49760)\n\nIt was discovered that the Erlang SFTP server incorrectly handled certain\npath resolution requests. An authenticated user could possibly use this\nissue to determine the existence of files outside of the root directory.\n(CVE-2026-53422)\n\nIt was discovered that the Erlang SFTP server incorrectly handled extended\nchannel data, leading to an infinite loop. An authenticated user could\npossibly use this issue to cause a denial of service. (CVE-2026-54886)\n\nIt was discovered that the Erlang DTLS server used a predictable cookie\nsecret on startup. A remote attacker could possibly use this issue to\nbypass source address verification. This issue only affected\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and\nUbuntu 26.04 LTS. (CVE-2026-54887)\n\nIt was discovered that Erlang TLS clients incorrectly accepted application\ndata before the handshake was completed. A remote attacker could possibly\nuse this issue to inject arbitrary data into TLS connections.\n(CVE-2026-54891)\n\nIt was discovered that the Erlang DTLS server contained a race condition\nwhen handling rapid client reconnections. A remote attacker could possibly\nuse this issue to cause Erlang to crash, resulting in a denial of service.\nThis issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS.\n(CVE-2026-55950)\n\nIt was discovered that Erlang did not properly validate TLS 1.3 pre-shared\nkey extensions. A remote attacker could possibly use this issue to cause\nErlang to crash, resulting in a denial of service. This issue only affected\nUbuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.\n(CVE-2026-55952)\n\nIt was discovered that the Erlang ASN.1 decoder incorrectly handled certain\nobject identifiers. A remote attacker could possibly use this issue to\ncause Erlang to use excessive resources, leading to a denial of service.\n(CVE-2026-65634)\n\nIt was discovered that the Erlang SSH server did not properly limit the\nnumber of open channels. An authenticated user could possibly use this\nissue to cause Erlang to use excessive resources, leading to a denial of\nservice. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS,\nUbuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.\n(CVE-2026-68956)\n\nIt was discovered that the Erlang HTTP server incorrectly shared users and\ngroups between directories when using dets or mnesia authentication\nbackends. A remote attacker could possibly use this issue to bypass\nauthentication and access protected directories. (CVE-2026-74994)\n\nIt was discovered that Erlang TLS clients incorrectly accepted unsolicited\nTLS 1.3 pre-shared keys from servers. A remote attacker could possibly use\nthis issue to impersonate servers. This issue only affected\nUbuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.\n(CVE-2026-89422)","status":"published","published":"2026-10-08T12:01:56Z","modified":"2026-10-08T19:58:53.589918012Z","updated_at":"2026-11-02T16:58:26.907654Z"}]}}