{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-100788", "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "state": "PUBLISHED", "assignerShortName": "mozilla", "dateReserved": "2026-09-26T19:17:13.330Z", "datePublished": "2026-09-29T12:36:11.268Z", "dateUpdated": "2026-10-01T14:45:31.361Z" }, "containers": { "cna": { "affected": [ { "product": "Thunderbird", "vendor": "Mozilla", "versions": [ { "status": "unaffected", "version": "140.17", "lessThanOrEqual": "140.*", "versionType": "rpm" }, { "status": "unaffected", "version": "153.4", "lessThanOrEqual": "153.*", "versionType": "rpm" }, { "status": "unaffected", "version": "157", "lessThanOrEqual": "*", "versionType": "rpm" } ] }, { "product": "Firefox", "vendor": "Mozilla", "versions": [ { "status": "unaffected", "version": "140.17", "lessThanOrEqual": "140.*", "versionType": "rpm" }, { "status": "unaffected", "version": "153.4", "lessThanOrEqual": "153.*", "versionType": "rpm" }, { "status": "unaffected", "version": "157", "lessThanOrEqual": "*", "versionType": "rpm" } ] } ], "descriptions": [ { "lang": "en", "value": "Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17." } ] } ], "title": "Invalid pointer in the JavaScript: WebAssembly component", "references": [ { "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2072413" }, { "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/mfsa2026-99/" } ], "credits": [ { "lang": "en", "value": "Mozilla" } ], "providerMetadata": { "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2026-09-30T17:20:29.498Z" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-824", "lang": "en", "description": "CWE-824 Access of Uninitialized Pointer" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-01T14:45:12.848467Z", "id": "CVE-2026-100788", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-01T14:45:31.361Z" } } ] } }