Setting a nameless cookie with an equals sign in the value shadowed other cookies. Even if the nameless cookie was set over HTTP and the shadowed cookie included the `Secure` attribute. This vulnerability affects Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141, and Thunderbird < 140.1.
CVSS
No CVSS.
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1964767 | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2025-56/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-59/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-61/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-63/ | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
28 Jul 2025, 18:51
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Mozilla thunderbird
Mozilla Mozilla firefox |
|
| References | () https://www.mozilla.org/security/advisories/mfsa2025-61/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2025-59/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2025-56/ - Vendor Advisory | |
| References | () https://bugzilla.mozilla.org/show_bug.cgi?id=1964767 - Permissions Required | |
| References | () https://www.mozilla.org/security/advisories/mfsa2025-63/ - Vendor Advisory | |
| CPE | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:* |
22 Jul 2025, 21:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-07-22 21:15
Updated : 2025-07-28 18:51
NVD link : CVE-2025-8037
Mitre link : CVE-2025-8037
JSON object : View
Products Affected
mozilla
- firefox
- thunderbird
CWE
No CWE.