CVE detail
CVE-2026-57963
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 13.9 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
3 source links · newest first
- https://www.mozilla.org/security/advisories/mfsa2026-64/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgJul 1, 2026, 2:17 AM - https://www.mozilla.org/security/advisories/mfsa2026-63/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgJul 1, 2026, 2:17 AM - https://bugzilla.mozilla.org/show_bug.cgi?id=2042910bugzilla.mozilla.org
No excerpt available.
Exploitbugzilla.mozilla.orgJul 1, 2026, 2:17 AM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
Related records
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