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thunderbird vulnerabilities · Page 29

Vulnerabilities published for thunderbird in the last 30 days: 263. Listed in the KEV catalogue: 0.

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Vulnerabilities: 1304

  1. CVE-2026-57962

    Medium · CVSS 5.3EPSS 0.34%No fix published

    Denial-of-service via malicious LDAP address-book server

    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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