{"api_version":"1","generated_at":"2026-06-16T19:14:39+00:00","cve":"CVE-2026-12300","urls":{"html":"https://cve.report/CVE-2026-12300","api":"https://cve.report/api/cve/CVE-2026-12300.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-12300","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-12300"},"summary":{"title":"Memory safety bug fixed in Thunderbird 152","description":"Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152.","state":"PUBLISHED","assigner":"mozilla","published_at":"2026-06-16 13:16:30","updated_at":"2026-06-16 17:16:34"},"problem_types":[],"metrics":[],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1704114","name":"https://bugzilla.mozilla.org/show_bug.cgi?id=1704114","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-57/","name":"https://www.mozilla.org/security/advisories/mfsa2026-57/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-60/","name":"https://www.mozilla.org/security/advisories/mfsa2026-60/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-12300","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12300","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Mozilla","product":"Firefox","version":"unaffected 152 * rpm","platforms":[]},{"source":"CNA","vendor":"Mozilla","product":"Thunderbird","version":"unaffected 152 * rpm","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Niklas","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":"*","status":"unaffected","version":"152","versionType":"rpm"}]},{"product":"Thunderbird","vendor":"Mozilla","versions":[{"lessThanOrEqual":"*","status":"unaffected","version":"152","versionType":"rpm"}]}],"credits":[{"lang":"en","value":"Niklas"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152."}],"value":"Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152."}],"providerMetadata":{"dateUpdated":"2026-06-16T16:08:29.809Z","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla"},"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1704114"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-57/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-60/"}],"title":"Memory safety bug fixed in Thunderbird 152"}},"cveMetadata":{"assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","assignerShortName":"mozilla","cveId":"CVE-2026-12300","datePublished":"2026-06-16T11:52:33.863Z","dateReserved":"2026-06-15T15:08:10.596Z","dateUpdated":"2026-06-16T16:08:29.809Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-16 13:16:30","lastModifiedDate":"2026-06-16 17:16:34","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"12300","Ordinal":"1","Title":"Memory safety bug fixed in Thunderbird 152","CVE":"CVE-2026-12300","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"12300","Ordinal":"1","NoteData":"Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152.","Type":"Description","Title":"Memory safety bug fixed in Thunderbird 152"}]}}}