CVE-2026-118003

Public on 2026-10-27

Modified on 2026-10-31

Description

Information disclosure in the Networking: DNS component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

Severity

Medium

See what this means

CVSS v3 Base Score

4.3

See breakdown

Affected Packages

Platform	Package	Status
Amazon Linux 2 - Firefox Extra	firefox	Pending Fix
Amazon Linux 2023	firefox	Pending Fix
Amazon Linux 2027 Preview	firefox	Pending Fix
Amazon Linux 2 - Firefox Extra	firefox-amzn-policies-generic	Not Affected
Amazon Linux 2 - Core	thunderbird	Pending Fix

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-118003 Mitre: CVE-2026-118003