{"api_version":"1","generated_at":"2026-10-01T10:34:52+00:00","cve":"CVE-2026-100781","urls":{"html":"https://cve.report/CVE-2026-100781","api":"https://cve.report/api/cve/CVE-2026-100781.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-100781","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-100781"},"summary":{"title":"Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component","description":"Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.","state":"PUBLISHED","assigner":"mozilla","published_at":"2026-09-29 13:17:43","updated_at":"2026-09-30 18:18:06"},"problem_types":[],"metrics":[],"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2026-102/","name":"https://www.mozilla.org/security/advisories/mfsa2026-102/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-103/","name":"https://www.mozilla.org/security/advisories/mfsa2026-103/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2068434","name":"https://bugzilla.mozilla.org/show_bug.cgi?id=2068434","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-101/","name":"https://www.mozilla.org/security/advisories/mfsa2026-101/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/","name":"https://www.mozilla.org/security/advisories/mfsa2026-97/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-100/","name":"https://www.mozilla.org/security/advisories/mfsa2026-100/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-99/","name":"https://www.mozilla.org/security/advisories/mfsa2026-99/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-98/","name":"https://www.mozilla.org/security/advisories/mfsa2026-98/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100781","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100781","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Mozilla","product":"Firefox","version":"unaffected 115.42 115.* rpm","platforms":[]},{"source":"CNA","vendor":"Mozilla","product":"Firefox","version":"unaffected 140.17 140.* rpm","platforms":[]},{"source":"CNA","vendor":"Mozilla","product":"Firefox","version":"unaffected 153.4 153.* rpm","platforms":[]},{"source":"CNA","vendor":"Mozilla","product":"Firefox","version":"unaffected 157 * rpm","platforms":[]},{"source":"CNA","vendor":"Mozilla","product":"Thunderbird","version":"unaffected 140.17 140.* rpm","platforms":[]},{"source":"CNA","vendor":"Mozilla","product":"Thunderbird","version":"unaffected 153.4 153.* rpm","platforms":[]},{"source":"CNA","vendor":"Mozilla","product":"Thunderbird","version":"unaffected 157 * rpm","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Mozilla","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"Firefox","vendor":"Mozilla","versions":[{"lessThanOrEqual":"115.*","status":"unaffected","version":"115.42","versionType":"rpm"},{"lessThanOrEqual":"140.*","status":"unaffected","version":"140.17","versionType":"rpm"},{"lessThanOrEqual":"153.*","status":"unaffected","version":"153.4","versionType":"rpm"},{"lessThanOrEqual":"*","status":"unaffected","version":"157","versionType":"rpm"}]},{"product":"Thunderbird","vendor":"Mozilla","versions":[{"lessThanOrEqual":"140.*","status":"unaffected","version":"140.17","versionType":"rpm"},{"lessThanOrEqual":"153.*","status":"unaffected","version":"153.4","versionType":"rpm"},{"lessThanOrEqual":"*","status":"unaffected","version":"157","versionType":"rpm"}]}],"credits":[{"lang":"en","value":"Mozilla"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17."}],"value":"Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17."}],"providerMetadata":{"dateUpdated":"2026-09-30T17:20:21.857Z","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla"},"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2068434"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-100/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-101/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-102/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-103/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-98/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-99/"}],"title":"Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component"}},"cveMetadata":{"assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","assignerShortName":"mozilla","cveId":"CVE-2026-100781","datePublished":"2026-09-29T12:36:07.342Z","dateReserved":"2026-09-26T19:16:55.886Z","dateUpdated":"2026-09-30T17:20:21.857Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-29 13:17:43","lastModifiedDate":"2026-09-30 18:18:06","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"100781","Ordinal":"1","Title":"Sandbox escape due to incorrect boundary conditions in the Graph","CVE":"CVE-2026-100781","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"100781","Ordinal":"1","NoteData":"Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.","Type":"Description","Title":"Sandbox escape due to incorrect boundary conditions in the Graph"}]}}}