CVE-2026-0883

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

Score

CVSS 3.1 5.3 Medium

Status

Modified - security@mozilla.org

Published

2026-01-13

Last modified

2026-04-13

Weaknesses

CWE-200

Affected products

• Firefox (Mozilla)
• Thunderbird (Mozilla)

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1989340
• https://www.mozilla.org/security/advisories/mfsa2026-01/
• https://www.mozilla.org/security/advisories/mfsa2026-03/
• https://www.mozilla.org/security/advisories/mfsa2026-04/
• https://www.mozilla.org/security/advisories/mfsa2026-05/