{"id":"CVE-2026-73196","aliases":["DEBIAN-CVE-2026-73196","EUVD-2026-63241","GHSA-rvf3-5qrx-mrj3","UBUNTU-CVE-2026-73196"],"status":"published","title":"Ipa: freeipa: authenticated dos in `otptoken-add` via unbounded otp key decoding/re-encoding","description":"A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by submitting an oversized One-Time Password (OTP) key value. This oversized key is then decoded and re-encoded without proper size limits, consuming excessive CPU and memory resources. This can lead to a denial of service, degrading the availability of the IPA service.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00426,"percentile":0.37163,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-770"],"published":"2026-08-20T10:31:58Z","modified":"2026-11-07T11:00:09Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"freeipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.10.1+dfsg1-1+exp1","4.10.1-1+exp1","4.10.2-1","4.10.2-2","4.10.2-2+exp1","4.11.1-1","4.11.1-1+exp1","4.11.1-2","4.11.1-2+exp1","4.11.1-2.1","4.12.2-1","4.12.2-2","4.12.2-3","4.12.4-1","4.12.4-2","4.13.1-1","4.9.11-1","4.9.11-1+exp1","4.9.11-2"]},{"source":"osv","ecosystem":"Debian:13","package":"freeipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.12.4-1","4.12.4-2","4.13.1-1"]},{"source":"osv","ecosystem":"Debian:14","package":"freeipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.12.4-1","4.12.4-2","4.13.1-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"freeipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.1-0ubuntu1","3.3.4-0ubuntu1","3.3.4-0ubuntu2","3.3.4-0ubuntu3","3.3.4-0ubuntu3.1","3.3.4-0ubuntu3.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"freeipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.4-1","4.3.1-0ubuntu1","4.3.1-0ubuntu1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"freeipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.4-3ubuntu1","4.4.4-4","4.7.0~pre1+git20180411-2ubuntu1","4.7.0~pre1+git20180411-2ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"freeipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.1-2ubuntu1","4.8.3-1","4.8.6-1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"freeipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.6-1ubuntu6","4.8.6-1ubuntu8","4.8.6-1ubuntu9","4.9.8-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"freeipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.10.2-1","4.10.2-2","4.10.2-2ubuntu3","4.11.1-1","4.11.1-2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"freeipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.13.1-1","4.13.1-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"freeipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.12.4-1","4.12.4-2","4.13.1-1"]}],"products":[{"vendor":"freeipa","product":"freeipa"},{"vendor":"red hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"},{"vendor":"redhat","product":"enterprise_linux"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-73196","tags":["vdb-entry","x_refsource_REDHAT","Vendor Advisory","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2474712","tags":["issue-tracking","x_refsource_REDHAT","Issue Tracking","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73196","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-rvf3-5qrx-mrj3"},{"url":"https://access.redhat.com/downloads/content/package-browser/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73196.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-73196","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-73196","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-73196","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-73196","title":"Ipa: freeipa: authenticated dos in `otptoken-add` via unbounded otp key decoding/re-encoding","description":"A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by submitting an oversized One-Time Password (OTP) key value. This oversized key is then decoded and re-encoded without proper size limits, consuming excessive CPU and memory resources. This can lead to a denial of service, degrading the availability of the IPA service.","status":"published","published":"2026-08-20T10:31:58.189Z","modified":"2026-11-05T22:41:30.871Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-770"],"updated_at":"2026-11-05T23:55:29.66083Z"}],"euvd":[{"id":"EUVD-2026-63241","description":"A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by submitting an oversized One-Time Password (OTP) key value. This oversized key is then decoded and re-encoded without proper size limits, consuming excessive CPU and memory resources. This can lead to a denial of service, degrading the availability of the IPA service.","status":"published","published":"2026-08-20T10:31:58Z","modified":"2026-11-05T22:41:30Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-06T00:02:32.983223Z"}],"ghsa":[{"id":"GHSA-rvf3-5qrx-mrj3","title":"A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by...","description":"A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by submitting an oversized One-Time Password (OTP) key value. This oversized key is then decoded and re-encoded without proper size limits, consuming excessive CPU and memory resources. This can lead to a denial of service, degrading the availability of the IPA service.","status":"published","published":"2026-08-20T12:31:22Z","modified":"2026-08-20T12:31:22Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T15:10:45.95343Z"}],"nvd":[{"id":"CVE-2026-73196","description":"A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by submitting an oversized One-Time Password (OTP) key value. This oversized key is then decoded and re-encoded without proper size limits, consuming excessive CPU and memory resources. This can lead to a denial of service, degrading the availability of the IPA service.","status":"published","published":"2026-08-20T11:16:21.417Z","modified":"2026-11-05T23:17:00.02Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-770"],"updated_at":"2026-11-06T01:57:39.734161Z"}],"osv":[{"id":"CVE-2026-73196","title":"Ipa: freeipa: authenticated dos in `otptoken-add` via unbounded otp key decoding/re-encoding","description":"A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by submitting an oversized One-Time Password (OTP) key value. This oversized key is then decoded and re-encoded without proper size limits, consuming excessive CPU and memory resources. This can lead to a denial of service, degrading the availability of the IPA service.","status":"published","published":"2026-08-20T10:31:58.189Z","modified":"2026-11-07T02:31:07.894123611Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-770"],"updated_at":"2026-11-07T03:08:09.897866Z"},{"id":"DEBIAN-CVE-2026-73196","description":"A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by submitting an oversized One-Time Password (OTP) key value. This oversized key is then decoded and re-encoded without proper size limits, consuming excessive CPU and memory resources. This can lead to a denial of service, degrading the availability of the IPA service.","status":"published","published":"2026-08-20T11:16:21.417Z","modified":"2026-11-07T11:00:09.59719234Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-07T11:15:14.449016Z"},{"id":"UBUNTU-CVE-2026-73196","description":"A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by submitting an oversized One-Time Password (OTP) key value. This oversized key is then decoded and re-encoded without proper size limits, consuming excessive CPU and memory resources. This can lead to a denial of service, degrading the availability of the IPA service.","status":"published","published":"2026-08-20T11:16:00Z","modified":"2026-10-17T13:01:00.798485288Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:57:08.628462Z"}]}}