CVE-2025-8037_CVE-2025-8037

9.1 / 10

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Description

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.

Basic Information

ID CVE-2025-8037

Source mozilla

Published Jul 22, 2025 at 20:49

Modified Jul 23, 2025 at 14:25

Affected Product

Vendor Mozilla

Product Firefox

Version unspecified

Affected Versions Mozilla Firefox unspecified
Mozilla Firefox ESR unspecified
Mozilla Thunderbird unspecified
Mozilla Thunderbird unspecified

CWE Classification

CWE-614

References

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    "lastseen": "",
    "description": "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.",
    "published": "2025-07-22T20:49:25.621Z",
    "modified": "2025-07-23T14:25:27.565Z",
    "type": "cve",
    "title": "CVE-2025-8037",
    "source": "mozilla",
    "references": "https://bugzilla.mozilla.org/show_bug.cgi?id=1964767\nhttps://www.mozilla.org/security/advisories/mfsa2025-56/\nhttps://www.mozilla.org/security/advisories/mfsa2025-59/\nhttps://www.mozilla.org/security/advisories/mfsa2025-61/\nhttps://www.mozilla.org/security/advisories/mfsa2025-63/",
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    "cvss": {
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