Bug 2495812 (CVE-2026-57962) - CVE-2026-57962 thunderbird: Thunderbird: Denial of Service via malicious LDAP server
Summary: CVE-2026-57962 thunderbird: Thunderbird: Denial of Service via malicious LDAP...
Keywords:
Status: NEW
Alias: CVE-2026-57962
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-01 02:01 UTC by OSIDB Bzimport
Modified: 2026-07-22 05:05 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-07-01 02:01:20 UTC 
A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.
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