CVE-2026-0883

Information disclosure in the Networking component. This vulnerability affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1989340	Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-01/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-03/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-04/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-05/	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox:::::esr:::*
	cpe:2.3:a:mozilla:firefox:::::-:::*
	cpe:2.3:a:mozilla:thunderbird:::::esr:::*
	cpe:2.3:a:mozilla:thunderbird:::::-:::*

History

No history.

Information

Published : 2026-01-13 14:16

Updated : 2026-01-22 19:03

NVD link : CVE-2026-0883

Mitre link : CVE-2026-0883

CVE.ORG link : CVE-2026-0883

JSON object : View

Products Affected

mozilla

firefox
thunderbird

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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