Firefox Networking Component Info Disclosure (pre-140.17/153.4/157)
CVE-2026-96869 Published on September 29, 2026

Information disclosure in the Networking component
Information disclosure in the Networking component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.

NVD

Vulnerability Analysis

CVE-2026-96869 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
REQUIRED
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Type

What is an Information Disclosure Vulnerability?

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

CVE-2026-96869 has been classified to as an Information Disclosure vulnerability or weakness.


Products Associated with CVE-2026-96869

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Mozilla Firefox
 
Mozilla Thunderbird
 

Affected Versions

Mozilla Thunderbird: Mozilla Firefox: