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CVE-2025-5263

Date: May 27, 2025

Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability affects Firefox < 139, Firefox ESR < 115.24, and Firefox ESR < 128.11.

Severity Score

Related Resources (8)

https://nvd.nist.gov/vuln/detail/CVE-2025-5263
https://www.mozilla.org/security/advisories/mfsa2025-44/
https://www.mozilla.org/security/advisories/mfsa2025-43/
https://www.mozilla.org/security/advisories/mfsa2025-46/
https://www.mozilla.org/security/advisories/mfsa2025-45/
https://bugzilla.mozilla.org/show_bug.cgi?id=1960745
https://www.mozilla.org/security/advisories/mfsa2025-42/
https://www.mend.io/vulnerability-database/CVE-2025-5263

Severity Score

Weakness Type (CWE)

Origin Validation Error

CWE-346

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

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