CVE-2025-5266 (GCVE-0-2025-5266)

Vulnerability from cvelistv5 – Published: 2025-05-27 12:29 – Updated: 2026-04-13 14:29
VLAI
Title
Script element events leaked cross-origin resource status
Summary
Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-23 14:44 UTC
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
mozilla CNA under the mitre root
CNA scorecard E 38/100 over 509 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Mozilla Firefox Unaffected: 128.11 , ≤ 128.* (rpm)
Unaffected: 139 , ≤ * (rpm)
guessed Create a notification for this product.
Mozilla Thunderbird Unaffected: 128.11 , ≤ 128.* (rpm)
Unaffected: 139 , ≤ * (rpm)
guessed Create a notification for this product.
Credits
Jakub Szymsza
Show details on NVD website
To clipboard 

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