{"id":"CVE-2026-120572","aliases":["EUVD-2026-115825","GHSA-5rc2-pf3x-xh5v","UBUNTU-CVE-2026-120572"],"status":"published","title":"Incorrect boundary conditions in the Layout: Block and Inline component","description":"Incorrect boundary conditions in the Layout: Block and Inline component. This vulnerability was fixed in Firefox 159.0.1 and Thunderbird 160.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00383,"percentile":0.32883,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2026-11-03T14:00:09Z","modified":"2026-11-10T21:32:49Z","affected":[{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mozjs52","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["52.3.1-0ubuntu3","52.3.1-7fakesync1","52.8.1-0ubuntu0.18.04.1","52.9.1-0ubuntu0.18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mozjs38","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["38.8.0~repack1-0ubuntu1","38.8.0~repack1-0ubuntu3","38.8.0~repack1-0ubuntu4"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"mozjs68","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["68.5.0-1~fakesync","68.5.0-2~fakesync","68.6.0-1","68.6.0-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"mozjs52","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["52.9.1-1build1","52.9.1-1ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"mozjs102","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["102.11.0-0ubuntu0.22.04.1","102.12.0-0ubuntu0.22.04.1","102.13.0-0ubuntu0.22.04.1","102.15.1-0ubuntu0.22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"mozjs78","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["78.13.0-1","78.15.0-2","78.15.0-4ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"mozjs91","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["91.5.1-0ubuntu1","91.6.0-1","91.6.0-2","91.7.0-2","91.10.0-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"thunderbird","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:91.1.2+build1-0ubuntu1","1:91.3.0+build2-0ubuntu1","1:91.3.1+build1-0ubuntu1","1:91.3.2+build1-0ubuntu1","1:91.4.0+build1.1-0ubuntu1","1:91.4.0+build2-0ubuntu1","1:91.5.0+build1-0ubuntu1","1:91.5.1+build1-0ubuntu1","1:91.6.1+build1-0ubuntu1","1:91.7.0+build1-0ubuntu1","1:91.7.0+build2-0ubuntu1","1:91.8.0+build2-0ubuntu1","1:91.9.1+build1-0ubuntu0.22.04.1","1:91.11.0+build2-0ubuntu0.22.04.1","1:102.2.2+build1-0ubuntu0.22.04.1","1:102.4.2+build2-0ubuntu0.22.04.1","1:102.7.1+build2-0ubuntu0.22.04.1","1:102.8.0+build2-0ubuntu0.22.04.1","1:102.9.0+build1-0ubuntu0.22.04.1","1:102.10.0+build2-0ubuntu0.22.04.1","1:102.11.0+build1-0ubuntu0.22.04.1","1:102.13.0+build1-0ubuntu0.22.04.1","1:102.15.0+build1-0ubuntu0.22.04.1","1:102.15.1+build1-0ubuntu0.22.04.1","1:115.3.1+build1-0ubuntu0.22.04.2","1:115.4.1+build1-0ubuntu0.22.04.1","1:115.5.0+build1-0ubuntu0.22.04.1","1:115.6.0+build2-0ubuntu0.22.04.1","1:115.8.1+build1-0ubuntu0.22.04.1","1:115.9.0+build1-0ubuntu0.22.04.1","1:115.10.1+build1-0ubuntu0.22.04.1","1:115.11.0+build2-0ubuntu0.22.04.1","1:115.12.0+build3-0ubuntu0.22.04.1","1:115.13.0+build5-0ubuntu0.22.04.1","1:115.15.0+build1-0ubuntu0.22.04.1","1:115.16.0+build2-0ubuntu0.22.04.1","1:115.18.0+build1-0ubuntu0.22.04.1","1:128.12.0+build1-0ubuntu0.22.04.1","1:140.7.1+build1-0ubuntu0.22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"mozjs102","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["102.15.1-1","102.15.1-3ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"mozjs115","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["115.3.0-0ubuntu1","115.4.0-2","115.5.0-1","115.6.0-1","115.7.0-4","115.8.0-1","115.9.0-1","115.9.0-1build1","115.10.0-1"]}],"products":[{"vendor":"mozilla","product":"firefox"},{"vendor":"mozilla","product":"thunderbird"}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2079035","tags":["report"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-123/","tags":["report"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-128/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120572"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-123"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-128"},{"url":"https://github.com/advisories/GHSA-5rc2-pf3x-xh5v"},{"url":"https://ubuntu.com/security/CVE-2026-120572","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-120572","tags":["report"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2026-123/#CVE-2026-120572","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-120572","title":"Incorrect boundary conditions in the Layout: Block and Inline component","description":"Incorrect boundary conditions in the Layout: Block and Inline component. This vulnerability was fixed in Firefox 159.0.1 and Thunderbird 160.","status":"published","published":"2026-11-03T14:00:09.093Z","modified":"2026-11-10T18:59:51.834Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-119"],"updated_at":"2026-11-10T22:18:26.309435Z"}],"euvd":[{"id":"EUVD-2026-115825","description":"Incorrect boundary conditions in the Layout: Block and Inline component. This vulnerability was fixed in Firefox 159.0.1 and Thunderbird 160.","status":"published","published":"2026-11-03T14:00:09Z","modified":"2026-11-10T18:59:51Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-10T20:23:06.565583Z"}],"ghsa":[{"id":"GHSA-5rc2-pf3x-xh5v","title":"Incorrect boundary conditions in the Layout: Block and Inline component. This vulnerability was...","description":"Incorrect boundary conditions in the Layout: Block and Inline component. This vulnerability was fixed in Firefox 159.0.1.","status":"published","published":"2026-11-03T15:31:50Z","modified":"2026-11-10T21:32:49Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-10T21:57:50.285633Z"}],"nvd":[{"id":"CVE-2026-120572","description":"Incorrect boundary conditions in the Layout: Block and Inline component. 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