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CVE-2026-109769: Vulnerability in Mozilla Firefox

0
Medium
VulnerabilityCVE-2026-109769cvecve-2026-109769
Published: 10/13/2026 (10/13/2026, 12:29:33 UTC)
Source: CVE Database V5
Vendor/Project: Mozilla
Product: Firefox

Description

Information disclosure in the Networking: Cache component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.

CVSS v3.1

Score 4.3medium

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Affected software

Mozilla

Firefox

Mozilla

Thunderbird

GitHub Actionsmore threats →ai
mozilla/firefox
pkg:github/mozilla/firefox
Affected versions
<158

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/13/2026, 13:19:36 UTC

Technical Analysis

This vulnerability involves information disclosure within the Networking: Cache component of Mozilla Firefox. The flaw could potentially allow unauthorized access to cached network data. Mozilla fixed this vulnerability in Firefox version 158.

Potential Impact

The vulnerability could lead to unauthorized disclosure of information from the network cache. No known exploits in the wild have been reported.

Mitigation Recommendations

Users should update to Firefox version 158 or later to remediate this vulnerability. The vendor advisory confirms that the issue is fixed in this version.

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Technical Details

Data Version
5.2
Assigner Short Name
mozilla
Date Reserved
2026-10-13T00:48:48.685Z
State
PUBLISHED
Vendor Advisory Urls
[{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","vendor":"Mozilla"}]

Threat ID: 6ace2c4f2cdf04f65661d56c

Added to database: 10/13/2026, 13:04:15 UTC

Last enriched: 10/13/2026, 13:19:36 UTC

Last updated: 10/13/2026, 18:57:33 UTC

Views: 7

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