CVE-2026-57962

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CVSS 3.1

5.3 medium

EPSS

<1%p12

Published

Jul 1, 2026 (Jul 1, 2026)

Modified

Jul 6, 2026

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.

Vendors: mozilla
Products: thunderbird
Weakness: CWE-400
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.2%)

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