{"id":"CVE-2026-113867","aliases":[],"cve":{"records":[{"id":"CVE-2026-113867","source":"mozilla","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-20T19:14:54.838Z","published":"2026-10-20T19:14:55.002Z","modified":"2026-10-29T18:28:43.359Z"}],"publishers":[{"name":"mozilla","role":"CNA","organizationId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","modified":"2026-10-20T19:46:39.051Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-29T18:28:43.359Z"}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2080073","tags":[],"source":"mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-114/","tags":[],"source":"mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-115/","tags":[],"source":"mozilla"}],"weaknesses":[{"id":"CWE-116","description":"CWE-116 Improper Encoding or Escaping of Output","source":"CISA-ADP"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-29T18:27:38.321543Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"total"}]}]},"title":"Stanza injection in XMPP chat","titleSource":"mozilla","descriptionSource":"mozilla","description":"Thunderbird did not escape attribute values when serializing outgoing XMPP stanzas. Because values from incoming requests were echoed back in automatic replies, a remote XMPP user could send a crafted request that caused Thunderbird to inject arbitrary stanzas into the user's connection, which the server would then process as if sent by the user. This could be used to send messages or change contact and subscription settings on behalf of the user, without any interaction. This bug only affects Thunderbird's chat feature with XMPP accounts. This vulnerability was fixed in Thunderbird 158.0.1 and Thunderbird 153.5.1.","score":9.1,"severity":"critical","published":"2026-10-20T19:14:55.002Z","modified":"2026-10-29T18:28:43.359Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Mozilla","name":"Thunderbird","platforms":[],"versions":[{"version":"153.5.1","status":"unaffected","lessThanOrEqual":"153.*","versionType":"rpm"},{"version":"158.0.1","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}],"cpes":[],"source":"mozilla","url":"https://www.cve.org/CVERecord?id=CVE-2026-113867"}],"remediation":[],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=2080073","https://www.mozilla.org/security/advisories/mfsa2026-114/","https://www.mozilla.org/security/advisories/mfsa2026-115/"],"sources":[{"name":"CVE","id":"CVE-2026-113867","modified":"2026-10-29T18:28:43.359Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-113867"}],"assessments":[{"source":"CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1}],"sourceAffected":[],"observedAt":"2026-10-29T18:48:59.008Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T09:10:30.844Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-29T19:10:33.541Z","attemptedAt":"2026-10-29T19:10:33.541Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-29T19:10:31.938Z","attemptedAt":"2026-10-29T19:10:31.938Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-29T19:10:33.246Z","attemptedAt":"2026-10-29T19:10:33.246Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-29T19:10:33.658Z","attemptedAt":"2026-10-29T19:10:33.658Z"}],"evidence":[{"source":"GitHub Advisory Database","id":"GHSA-7qpm-g2hw-rqrc","url":"https://github.com/advisories/GHSA-7qpm-g2hw-rqrc","modified":"2026-10-20T21:31:06Z","checkedAt":"2026-10-29T19:10:31.938Z"},{"source":"ENISA EUVD","id":"EUVD-2026-105294","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-105294","modified":"Oct 29, 2026, 6:28:43 PM","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","checkedAt":"2026-10-29T19:10:33.246Z"},{"source":"NVD","id":"CVE-2026-113867","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113867","modified":"2026-10-22T17:36:46.950","checkedAt":"2026-10-29T19:10:33.541Z"},{"source":"FIRST EPSS","id":"CVE-2026-113867","url":"https://www.first.org/epss/","probability":0.00179,"percentile":0.07501,"date":"2026-10-29","checkedAt":"2026-10-29T19:10:33.658Z"}],"aiSummary":{"text":"Thunderbird's XMPP chat feature is vulnerable to stanza injection, allowing a remote user to send crafted requests and inject arbitrary stanzas. This affects Thunderbird versions prior to 153.5.1 and 158.0.1. The vulnerability could be used to send messages or change settings on behalf of the user.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:50:15.204Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-113867"}]}}