CVE-2025-8031
published 2025-07-22CVE-2025-8031: The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials. This vulnerability…
PriorityP351critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.43%
35.0th percentile
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.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 141.0-1 (sid) | firefox 141.0-1 (sid) |
| debian | firefox-esr | < firefox 141.0-1 (sid) | firefox 141.0-1 (sid) |
| debian | thunderbird | < firefox 141.0-1 (sid) | firefox 141.0-1 (sid) |
| mozilla | firefox | < 128.13.0 | 128.13.0 |
| mozilla | firefox | < 141.0 | 141.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 140.0 < 140.1.0 | 140.1.0 |
| mozilla | thunderbird | < 128.13.0 | 128.13.0 |
| mozilla | thunderbird | < 141.0 | 141.0 |
| mozilla | thunderbird | >= 0 < 1:128.13.0esr-1~deb11u1 | 1:128.13.0esr-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:128.13.0esr-1~deb12u1 | 1:128.13.0esr-1~deb12u1 |
| mozilla | thunderbird | >= 0 < 1:128.13.0esr-1 | 1:128.13.0esr-1 |
| mozilla | thunderbird | >= 0 < 1:128.13.0esr-1 | 1:128.13.0esr-1 |
| mozilla | thunderbird | >= 140.0 < 140.1.0 | 140.1.0 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
osv9.8CRITICAL
vendor_debian9.8CRITICAL
vendor_redhat9.8CRITICAL
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Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2026-02-02
CVE-2025-8031 Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, cross-site
tracing, or execute arbitrary code.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
firefox: thunderbird: Incorrect URL stripping in CSP reports
vendor_redhat·2025-07-22·CVSS 9.8
CVE-2025-8031 [CRITICAL] CWE-276 firefox: thunderbird: Incorrect URL stripping in CSP reports
firefox: thunderbird: Incorrect URL stripping in CSP reports
The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials. This vulnerability affects Firefox username:password part is incorrectly stripped from URLs in CSP reports, potentially leaking HTTP Basic Authentication credentials.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of support scope
Packag
Debian
CVE-2025-8031: firefox - The `username:password` part was not correctly stripped from URLs in CSP reports...
vendor_debian·2025·CVSS 9.8
CVE-2025-8031 [CRITICAL] CVE-2025-8031: firefox - The `username:password` part was not correctly stripped from URLs in CSP reports...
The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials. This vulnerability affects Firefox < 141, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.
Scope: local
sid: resolved (fixed in 141.0-1)
Mozilla
Mozilla Foundation Security Advisory 2025-63: CVE-2025-8031
vendor_mozilla·CVSS 9.8
CVE-2025-8031 [CRITICAL] Mozilla Foundation Security Advisory 2025-63: CVE-2025-8031
Mozilla Foundation Security Advisory 2025-63
CVE: CVE-2025-8031
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140.1
Mozilla
Mozilla Foundation Security Advisory 2025-59: CVE-2025-8031
vendor_mozilla·CVSS 9.8
CVE-2025-8031 [CRITICAL] Mozilla Foundation Security Advisory 2025-59: CVE-2025-8031
Mozilla Foundation Security Advisory 2025-59
CVE: CVE-2025-8031
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 140.1
Mozilla
Mozilla Foundation Security Advisory 2025-58: CVE-2025-8031
vendor_mozilla·CVSS 9.8
CVE-2025-8031 [CRITICAL] Mozilla Foundation Security Advisory 2025-58: CVE-2025-8031
Mozilla Foundation Security Advisory 2025-58
CVE: CVE-2025-8031
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 128.13
Mozilla
Mozilla Foundation Security Advisory 2025-62: CVE-2025-8031
vendor_mozilla·CVSS 9.8
CVE-2025-8031 [CRITICAL] Mozilla Foundation Security Advisory 2025-62: CVE-2025-8031
Mozilla Foundation Security Advisory 2025-62
CVE: CVE-2025-8031
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 128.13
Mozilla
Mozilla Foundation Security Advisory 2025-56: CVE-2025-8031
vendor_mozilla·CVSS 9.8
CVE-2025-8031 [CRITICAL] Mozilla Foundation Security Advisory 2025-56: CVE-2025-8031
Mozilla Foundation Security Advisory 2025-56
CVE: CVE-2025-8031
Product: Firefox
Impact: high
Fixed in: Firefox 141
Mozilla
Mozilla Foundation Security Advisory 2025-61: CVE-2025-8031
vendor_mozilla·CVSS 9.8
CVE-2025-8031 [CRITICAL] Mozilla Foundation Security Advisory 2025-61: CVE-2025-8031
Mozilla Foundation Security Advisory 2025-61
CVE: CVE-2025-8031
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 141
GHSA
GHSA-q32c-9wc5-gv77: The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials
ghsa_unreviewed·2025-07-22
CVE-2025-8031 [CRITICAL] CWE-276 GHSA-q32c-9wc5-gv77: The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials
The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials. This vulnerability affects Firefox < 141, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.
OSV
CVE-2025-8031: The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials
osv·2025-07-22·CVSS 9.8
CVE-2025-8031 [CRITICAL] CVE-2025-8031: The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials
The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials. This vulnerability affects Firefox < 141, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.
No detection rules found.
No public exploits indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1971719https://www.mozilla.org/security/advisories/mfsa2025-56/https://www.mozilla.org/security/advisories/mfsa2025-58/https://www.mozilla.org/security/advisories/mfsa2025-59/https://www.mozilla.org/security/advisories/mfsa2025-61/https://www.mozilla.org/security/advisories/mfsa2025-62/https://www.mozilla.org/security/advisories/mfsa2025-63/https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html
2025-07-22
Published