{"cve":"CVE-2023-50761","nvd":{"published":"2023-12-19T14:15:07.033","modified":"2026-06-17T06:39:55.507","status":"Modified","description":"The signature of a digitally signed S/MIME email message may optionally specify the signature creation date and time. If present, Thunderbird did not compare the signature creation date with the message date and time, and displayed a valid signature despite a date or time mismatch. This could be used to give recipients the impression that a message was sent at a different date or time. This vulnerability affects Thunderbird < 115.6.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","score":4.3},"cwes":[],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1865647","https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html","https://www.debian.org/security/2023/dsa-5582","https://www.mozilla.org/security/advisories/mfsa2023-55/","https://bugzilla.mozilla.org/show_bug.cgi?id=1865647"],"products":["debian:debian_linux","mozilla:thunderbird"],"source":"nvd","synced_at":"2026-10-19T21:42:34.585441961+00:00"},"epss":{"cve":"CVE-2023-50761","score":0.00633,"percentile":0.5034,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}