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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-2790

Same-origin policy bypass in the Networking: JAR component

Description

Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mozilla Firefox

  • 140.8 to ≤ 140.*unaffected
  • 148 to ≤ *unaffected

Mozilla Thunderbird

  • 140.8 to ≤ 140.*unaffected
  • 148 to ≤ *unaffected

References