{"schemaVersion":3,"id":"CVE-2023-50762","aliases":["UBUNTU-CVE-2023-50762","DEBIAN-CVE-2023-50762"],"status":"published","duplicateOf":null,"title":null,"description":"When processing a PGP/MIME payload that contains digitally signed text, the first paragraph of the text was never shown to the user. This is because the text was interpreted as a MIME message and the first paragraph was always treated as an email header section. A digitally signed text from a different context, such as a signed GIT commit, could be used to spoof an email message. This vulnerability affects Thunderbird < 115.6.","dates":{"published":"2023-12-19T13:38:34.261Z","modified":"2025-02-13T17:19:30.636Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.3,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","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":"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":0.00633,"percentile":0.49397,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00633},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00633,"percentile":0.49397}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00633,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00633,"percentile":0.49397}]},"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":[],"affected":[{"vendor":"debian","product":"thunderbird","name":"thunderbird","label":"thunderbird","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/thunderbird","purlType":"deb","versions":[{"text":"< 1:115.6.0-1~deb12u1","noFixRecorded":false,"fixedIn":null},{"text":"< 1:115.6.0-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:115.6.0-1~deb12u1 | < 1:115.6.0-1","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":"< 1:115.6.0+build2-0ubuntu0.20.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 1:115.6.0+build2-0ubuntu0.22.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:115.6.0+build2-0ubuntu0.20.04.1 | < 1:115.6.0+build2-0ubuntu0.22.04.1","eol":null,"hubHref":null},{"vendor":"debian","product":"debian_linux","name":"debian linux","label":"debian_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"11.0","noFixRecorded":false,"fixedIn":null},{"text":"12.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"11.0 | 12.0","eol":{"isEol":true,"eolDate":"2026-08-31T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"11","label":"11 (Bullseye)","eolFrom":"2026-08-31T00:00:00.000Z","isLts":false,"isMaintained":true,"latestVersion":"11.11"},"product":{"name":"debian","label":"Debian","category":"os"}},"hubHref":"/vendor/debian/debian_linux"},{"vendor":"mozilla","product":"thunderbird","name":"Thunderbird","label":"thunderbird","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 115.6","noFixRecorded":false,"fixedIn":null},{"text":"< 115.6","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 115.6 | < 115.6","eol":null,"hubHref":"/vendor/mozilla/thunderbird"}],"affectedCount":4,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1862625","label":"bugzilla.mozilla.org/show_bug.cgi?id=1862625","hostname":"bugzilla.mozilla.org","tags":["REPORT","Issue Tracking","Permissions Required"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-55/","label":"www.mozilla.org/security/advisories/mfsa2023-55/","hostname":"www.mozilla.org","tags":["REPORT","Vendor Advisory"]},{"url":"https://www.debian.org/security/2023/dsa-5582","label":"www.debian.org/security/2023/dsa-5582","hostname":"www.debian.org","tags":["Third Party Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html","label":"lists.debian.org/debian-lts-announce/2023/12/msg00021.html","hostname":"lists.debian.org","tags":[]},{"url":"https://ubuntu.com/security/CVE-2023-50762","label":"ubuntu.com/security/CVE-2023-50762","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2023-55/#CVE-2023-50762","label":"www.mozilla.org/en-US/security/advisories/mfsa2023-55/","hostname":"www.mozilla.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-6563-1","label":"ubuntu.com/security/notices/USN-6563-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-50762","label":"www.cve.org/CVERecord?id=CVE-2023-50762","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-50762","label":"security-tracker.debian.org/tracker/CVE-2023-50762","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["DLA-3698-1","DSA-5582-1","MGASA-2024-0006","OPENSUSE-SU-2024:13519-1","RHSA-2024:0001","RHSA-2024:0002","RHSA-2024:0003","RHSA-2024:0004","RHSA-2024:0005","RHSA-2024:0027","RHSA-2024:0028","RHSA-2024:0029","RHSA-2024:0030","SUSE-SU-2024:0044-1","USN-6563-1"],"duplicates":[],"related":["OPENSUSE-SU-2024:13519-1","SUSE-SU-2024:0044-1","USN-6563-1"]},"timeline":[{"kind":"published","date":"2023-12-19T13:38:34.261Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-02-13T17:19:30.636Z","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":"2026-10-20T21:01:37.252Z","stale":false,"partial":false}}