{"id":"CVE-2025-8031","title":"The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials","summary":"The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 1…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-276"],"vendor":"mozilla","product":"firefox","affected":["firefox < 128.13.0","firefox < 141.0","firefox >= 140.0, < 140.1.0","thunderbird < 128.13.0","thunderbird < 141.0","thunderbird >= 140.0, < 140.1.0"],"patched":["firefox 140.1.0","thunderbird 140.1.0"],"published":"2025-07-22","updated":"2026-09-30","sourceUpdated":"2026-09-30T18:10:00.190","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-8031","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1971719","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-56/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-58/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-59/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-61/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-62/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-63/","label":"security@mozilla.org"},{"url":"https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00465,"epssPercentile":0.379,"ingestedAt":"2026-09-30T18:17:24.448Z","slug":"CVE-2025-8031","body":"## Overview\n\nThe `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.\n\n## Affected\n\n- `firefox < 128.13.0`\n- `firefox < 141.0`\n- `firefox >= 140.0, < 140.1.0`\n- `thunderbird < 128.13.0`\n- `thunderbird < 141.0`\n- `thunderbird >= 140.0, < 140.1.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `firefox 140.1.0`\n- `thunderbird 140.1.0`","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}