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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Current Description
Information disclosure in the Networking: Cache component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.
This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
Metrics
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vector strings. CVSS information contributed by other sources is also
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CVE Modified by Mozilla Corporation4/13/2026 11:16:37 AM
Action
Type
Old Value
New Value
Changed
Description
Information disclosure in the Networking: Cache component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
Information disclosure in the Networking: Cache component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.
CVE Modified by Mozilla Corporation10/30/2025 1:15:35 PM
Action
Type
Old Value
New Value
Changed
Description
This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
Information disclosure in the Networking: Cache component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
CVE Modified by CISA-ADP9/22/2025 2:15:38 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Removed
CVSS V3.1
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Initial Analysis by NIST9/19/2025 10:58:15 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* versions up to (excluding) 143.0
*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions from (including) 141.0 up to (excluding) 143.0
*cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* versions up to (excluding) 140.3.0
*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 140.3.0
Added
Reference Type
Mozilla Corporation: https://bugzilla.mozilla.org/show_bug.cgi?id=1981502 Types: Issue Tracking, Permissions Required
Added
Reference Type
Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-73/ Types: Vendor Advisory
Added
Reference Type
Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-75/ Types: Vendor Advisory
Added
Reference Type
Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-77/ Types: Vendor Advisory
Added
Reference Type
Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-78/ Types: Vendor Advisory
CVE Modified by Mozilla Corporation9/16/2025 11:15:43 AM
Action
Type
Old Value
New Value
Changed
Description
This vulnerability affects Firefox < 143 and Firefox ESR < 140.3.
This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.