{"schemaVersion":3,"id":"CVE-2022-1520","aliases":["UBUNTU-CVE-2022-1520","DEBIAN-CVE-2022-1520"],"status":"published","duplicateOf":null,"title":null,"description":"When viewing an email message A, which contains an attached message B, where B is encrypted or digitally signed or both, Thunderbird may show an incorrect encryption or signature status. After opening and viewing the attached message B, when returning to the display of message A, the message A might be shown with the security status of message B. This vulnerability affects Thunderbird < 91.9.","dates":{"published":"2022-12-22T00:00:00.000Z","modified":"2025-04-16T15:20:58.943Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.3,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":4.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":4.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","exploitability":7.2,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":4.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","exploitability":7.2,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":4.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00268,"percentile":0.17806,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.0020000000000000052,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00266},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00268,"percentile":0.17806}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00266,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00268,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00268,"percentile":0.17806}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-346","name":"Origin Validation Error","description":"The product does not properly verify that the source of data or communication is valid.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/346.html"}],"affected":[{"vendor":"debian","product":"thunderbird","name":"thunderbird","label":"thunderbird","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/thunderbird","purlType":"deb","versions":[{"text":"< 1:91.9.0-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:91.9.0-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"thunderbird","name":"thunderbird","label":"thunderbird","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/thunderbird","purlType":"deb","versions":[{"text":"< 1:91.9.1+build1-0ubuntu0.18.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 1:91.9.1+build1-0ubuntu0.20.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 1:91.9.1+build1-0ubuntu0.22.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:91.9.1+build1-0ubuntu0.18.04.1 | < 1:91.9.1+build1-0ubuntu0.20.04.1 | < 1:91.9.1+build1-0ubuntu0.22.04.1","eol":null,"hubHref":null},{"vendor":"mozilla","product":"thunderbird","name":"Thunderbird","label":"thunderbird","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 91.9","noFixRecorded":false,"fixedIn":null},{"text":"< 91.9","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 91.9 | < 91.9","eol":null,"hubHref":"/vendor/mozilla/thunderbird"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2022-18/","label":"www.mozilla.org/security/advisories/mfsa2022-18/","hostname":"www.mozilla.org","tags":["Vendor Advisory"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1745019","label":"bugzilla.mozilla.org/show_bug.cgi?id=1745019","hostname":"bugzilla.mozilla.org","tags":["Issue Tracking","Permissions Required","Vendor Advisory"]},{"url":"https://ubuntu.com/security/CVE-2022-1520","label":"ubuntu.com/security/CVE-2022-1520","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2022-18/#CVE-2022-1520","label":"www.mozilla.org/en-US/security/advisories/mfsa2022-18/","hostname":"www.mozilla.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-5435-1","label":"ubuntu.com/security/notices/USN-5435-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-1520","label":"www.cve.org/CVERecord?id=CVE-2022-1520","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2022-1520","label":"security-tracker.debian.org/tracker/CVE-2022-1520","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["DLA-3020-1","DSA-5141-1","MGASA-2022-0163","OPENSUSE-SU-2024:12045-1","RHSA-2022:1724","RHSA-2022:1725","RHSA-2022:1726","RHSA-2022:1727","RHSA-2022:1730","RHSA-2022:4589","SUSE-SU-2022:1719-1","USN-5435-1"],"duplicates":[],"related":["OPENSUSE-SU-2024:12045-1","SUSE-SU-2022:1719-1","USN-5435-1"]},"timeline":[{"kind":"published","date":"2022-12-22T00:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-04-16T15:20:58.943Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":17,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T06:47:29.689Z","stale":false,"partial":false}}