{"id":"CVE-2026-92077","title":"Denial-of-service in the SVG component","summary":"Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-770"],"vendor":"mozilla","product":"firefox","affected":["firefox < 153.3.0","firefox >= 154.0.0, < 156.0.0","thunderbird < 153.3.0","thunderbird >= 154.0, < 156.0"],"patched":["firefox 156.0.0","thunderbird 156.0"],"published":"2026-09-15","updated":"2026-10-05","sourceUpdated":"2026-10-05T19:21:22.490","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92077","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2064601","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-93/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-94/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-96/","label":"security@mozilla.org"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92077.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-92077"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2533803"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92077"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92077"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/#CVE-2026-92077"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-94/#CVE-2026-92077"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00272,"epssPercentile":0.195,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-20T00:23:48.304265Z"},"scores":{"nvd":6.5,"vendor":3.4,"adp":6.5},"ingestedAt":"2026-09-15T13:37:33.319Z","slug":"CVE-2026-92077","body":"## Overview\n\nDenial-of-service in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.\n\n## Affected\n\n- `firefox < 153.3.0`\n- `firefox >= 154.0.0, < 156.0.0`\n- `thunderbird < 153.3.0`\n- `thunderbird >= 154.0, < 156.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `firefox 156.0.0`\n- `thunderbird 156.0`\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · updated 2026-09-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92077.json)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":207893,"id":"CVE-2026-92077","ts":1789870390626,"field":"cvss","old":"3.4","new":"6.5"},{"seq":207892,"id":"CVE-2026-92077","ts":1789870390626,"field":"severity","old":"low","new":"medium"},{"seq":207020,"id":"CVE-2026-92077","ts":1789749741029,"field":"cvss","old":null,"new":"3.4"},{"seq":207019,"id":"CVE-2026-92077","ts":1789749741029,"field":"severity","old":"none","new":"low"}]}