Description

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.

Affected products

VendorProductVersions
MozillaThunderbird140.12.1 to <=140.*; 152.0.1 to <=*

References

Authoritative sources

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Generated from the official CVE List on 01 Jul 2026 07:05 UTC.