CVE-2025-8036

8.1 HIGH

Published: July 22, 2025 Modified: April 13, 2026

Description

Thunderbird cached CORS preflight responses across IP address changes. This allowed circumventing CORS with DNS rebinding. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://bugzilla.mozilla.org/show_bug.cgi?id=1960834

Source: security@mozilla.org

Permissions Required

https://www.mozilla.org/security/advisories/mfsa2025-56/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-59/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-61/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-63/

Source: security@mozilla.org

Vendor Advisory

https://www.kb.cert.org/vuls/id/652514

Source: af854a3a-2127-422b-91ae-364da2661108

6 reference(s) from NVD

Quick Stats

CVSS v3 Score

8.1 / 10.0

EPSS (Exploit Probability)

0.1%

21th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-350

Affected Vendors

mozilla

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