5.3
Medium
CVE-2026-57962 A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash…
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 and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Thunderbird 152.0 | earliest → < 152.0.1 | 152.0.1 |
| Thunderbird 140.12 | earliest → < 140.12.1 | 140.12.1 |
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