Excessive Platform Resource Consumption within a Loop Affecting thunderbird package, versions <0:140.13.0-1.amzn2.0.1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.22% (13th percentile)

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  • Snyk IDSNYK-AMZN2-THUNDERBIRD-18904894
  • published18 Aug 2026
  • disclosed1 Jul 2026

Introduced: 1 Jul 2026

CVE-2026-57962  (opens in a new tab)
CWE-1050  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 thunderbird to version 0:140.13.0-1.amzn2.0.1 or higher.
This issue was patched in ALAS2-2026-3868.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1