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VULNERABILITIES

CVE-2026-57962 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=2042872 [email protected]Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-63/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-64/ [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-400Uncontrolled Resource ConsumptionCISA-ADP

Affected Products

ProductVersions
mozilla thunderbird
< 140.12.1
< 152.0.1

CPE

  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-57962
NVD Published Date:
Jul 1, 2026
NVD Last Modified:
Jul 6, 2026
Source:
[email protected]
CVE-2026-57962 Details - Not Deferred