Bug 2527115 (CVE-2026-84641) - CVE-2026-84641 thunderbird: Information disclosure due to malicious IMAP server response
Summary: CVE-2026-84641 thunderbird: Information disclosure due to malicious IMAP serv...
Keywords:
Status: NEW
Alias: CVE-2026-84641
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-01 21:42 UTC by OSIDB Bzimport
Modified: 2026-09-08 13:22 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-09-01 21:42:16 UTC 
A malicious IMAP server can trigger use-after-free and heap-memory disclosure by sending a crafted ID response. Heap contents can ultimately be persisted to prefs.js. This vulnerability was fixed in Thunderbird 155.
Note You need to log in before you can comment on or make changes to this bug.