CVE-2025-8031 — Incorrect Default Permissions in Mozilla Firefox
Severity
9.8CRITICALNVD
EPSS
0.1%
top 67.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJul 22
Latest updateFeb 2
Description
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 141, Thunderbird 128.13, and Thunderbird 140.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9
Affected Packages3 packages
🔴Vulnerability Details
3GHSA▶
GHSA-q32c-9wc5-gv77: The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials↗2025-07-22
OSV▶
CVE-2025-8031: The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials↗2025-07-22
📋Vendor Advisories
9Debian▶
CVE-2025-8031: firefox - The `username:password` part was not correctly stripped from URLs in CSP reports...↗2025