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.
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
No history.
Information
Published : 2025-07-22 21:15
Updated : 2025-07-28 18:51
NVD link : CVE-2025-8037
Mitre link : CVE-2025-8037
CVE.ORG link : CVE-2025-8037
JSON object : View
Products Affected
mozilla
- thunderbird
- firefox
CWE
CWE-614
Sensitive Cookie in HTTPS Session Without 'Secure' Attribute