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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-57963

Chat UI manipulation by injection

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
mozilla

Description

An attacker who can send HTML chat messages (via Matrix or XMPP) can inject arbitrary styled content, phishing links, and CSS that manipulates the chat UI. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mozilla Thunderbird

  • 140.12.1 to ≤ 140.*unaffected
  • 152.0.1 to ≤ *unaffected

References