{"id":"CVE-2026-112063","aliases":["DEBIAN-CVE-2026-112063","EUVD-2026-103505","GHSA-37wj-432m-6r6f","UBUNTU-CVE-2026-112063"],"status":"published","title":"libstrophe through 0.14.0 Stack-Based Buffer Overflow via SCRAM Salt in SCRAM_Hi","description":"libstrophe through 0.14.0 contains a stack-based buffer overflow vulnerability in SCRAM_Hi that allows malicious XMPP servers to overflow a 128-byte stack buffer by sending an oversized SCRAM salt. Attackers can send a server-first-message whose s= attribute decodes to more than 124 bytes, aborting the client or overwriting stack memory in NDEBUG builds.","severity":{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00283,"percentile":0.21112,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-10-18T12:19:52Z","modified":"2026-10-28T20:17:32Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"libstrophe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.12.2-1","0.12.3-1","0.12.3-1~bpo12+1","0.13.0-1","0.13.0-1~bpo11+1","0.13.0-1~bpo12+1","0.13.1-1","0.14.0-1","0.14.0-2","0.14.0-3","0.14.0-4","0.14.0-4~bpo12+1","0.14.0-5"]},{"source":"osv","ecosystem":"Debian:13","package":"libstrophe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.0-4","0.14.0-5"]},{"source":"osv","ecosystem":"Debian:14","package":"libstrophe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.0-4","0.14.0-5"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libstrophe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.8.7-1","0.8.8-2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"libstrophe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.1-1","0.9.1-1build1","0.9.1+git20170912.6e6093e-1","0.9.1+git20170912.6e6093e-2","0.9.2-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libstrophe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.2-2","0.9.3-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libstrophe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.10.1-1","0.11.0-1","0.11.0-1build1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libstrophe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.12.3-1","0.13.0-1","0.13.0-1build1","0.13.0-1build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libstrophe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.0-5build1","0.14.0-5build2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libstrophe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.0-5","0.14.0-5build1"]}],"products":[{"vendor":"strophe","product":"libstrophe"}],"references":[{"url":"https://hackmd.io/@haindpwn/libstrophe-scram-salt-stack-overflow","tags":["third-party-advisory","exploit","advisory"]},{"url":"https://github.com/strophe/libstrophe/blob/0.14.0/src/scram.c","tags":["technical-description","article"]},{"url":"https://github.com/strophe/libstrophe/blob/0.14.0/src/sasl.c","tags":["technical-description","article"]},{"url":"https://www.vulncheck.com/advisories/libstrophe-through-0.14.0-stack-based-buffer-overflow-via-scram-salt-in-scram-hi","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112063","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-37wj-432m-6r6f"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112063.json","tags":["advisory"]},{"url":"https://github.com/strophe/libstrophe","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-112063","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-112063","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-112063","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-112063","title":"libstrophe through 0.14.0 Stack-Based Buffer Overflow via SCRAM Salt in SCRAM_Hi","description":"libstrophe through 0.14.0 contains a stack-based buffer overflow vulnerability in SCRAM_Hi that allows malicious XMPP servers to overflow a 128-byte stack buffer by sending an oversized SCRAM salt. 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Attackers can send a server-first-message whose s= attribute decodes to more than 124 bytes, aborting the client or overwriting stack memory in NDEBUG builds.","status":"published","published":"2026-10-18T13:16:38.893Z","modified":"2026-10-19T21:14:14.15Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/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":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:13:00.123071Z"}],"osv":[{"id":"CVE-2026-112063","title":"libstrophe through 0.14.0 Stack-Based Buffer Overflow via SCRAM Salt in SCRAM_Hi","description":"libstrophe through 0.14.0 contains a stack-based buffer overflow vulnerability in SCRAM_Hi that allows malicious XMPP servers to overflow a 128-byte stack buffer by sending an oversized SCRAM salt. 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