{"id":"CVE-2026-113399","title":"Incorrect boundary conditions in the SVG component","summary":"Incorrect boundary conditions in the SVG component. This vulnerability was fixed in Firefox 158.0.1 and Thunderbird 158.0.1.","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"adp","vendor":"Mozilla","product":"Firefox","affected":["Firefox","Thunderbird"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-29T17:43:33.677361Z"},"published":"2026-10-20","updated":"2026-10-29","sourceUpdated":"2026-10-29T17:44:03.368Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-113399","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2079938"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-111/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-114/"}],"tags":["cve.org"],"epss":0.00489,"epssPercentile":0.42071,"ingestedAt":"2026-10-20T14:08:00.583Z","slug":"CVE-2026-113399","body":"## Overview\n\nIncorrect boundary conditions in the SVG component. This vulnerability was fixed in Firefox 158.0.1 and Thunderbird 158.0.1.\n\n## Affected\n\n- `Firefox`\n- `Thunderbird`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":231947,"id":"CVE-2026-113399","ts":1793570594396,"field":"cvss","old":null,"new":"9.8"},{"seq":231946,"id":"CVE-2026-113399","ts":1793570594396,"field":"severity","old":"none","new":"critical"}]}