{"id":"CVE-2026-57963","state":"PUBLISHED","title":"Chat UI manipulation by injection","description":"An attacker who can send HTML chat messages (via Matrix or XMPP) can inject arbitrary styled content, phishing links, and CSS that manipulates the chat UI. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.","publishedAt":"2026-07-01T00:58:33.922Z","updatedAt":"2026-07-01T14:09:10.035Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Thunderbird"],"affected":[{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"140.12.1","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"152.0.1","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=2042910","https://www.mozilla.org/security/advisories/mfsa2026-63/","https://www.mozilla.org/security/advisories/mfsa2026-64/"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/57xxx/CVE-2026-57963.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-57963","state":"PUBLISHED","datePublished":"2026-07-01T00:58:33.922Z","dateUpdated":"2026-07-01T14:09:10.035Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2026-06-26T15:27:32.832Z"},"containers":{"cna":{"title":"Chat UI manipulation by injection","descriptions":[{"lang":"en","value":"An attacker who can send HTML chat messages (via Matrix or XMPP) can inject arbitrary styled content, phishing links, and CSS that manipulates the chat UI. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1."}],"affected":[{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"140.12.1","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"152.0.1","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2042910"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-63/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-64/"}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2026-07-01T13:55:42.929Z"},"credits":[{"lang":"en","value":"Michael Bommarito"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-01T14:09:04.424819Z","id":"CVE-2026-57963","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","type":"CWE","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-01T14:09:10.035Z"}}]}}}