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Permalink CVE-2026-57962
5.3 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): Required (R)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): Required (R)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
created 2 weeks ago Activity log
  • Created suggestion 2 weeks ago
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.

Affected products

Thunderbird
  • =<*
  • =<140.*

Matching in nixpkgs

pkgs.thunderbird-cli

Low-level CLI to manage Mozilla Thunderbird email from the shell

pkgs.thunderbird-mcp

MCP server for Thunderbird - enables AI assistants to access email, contacts, and calendars

pkgs.thunderbird-cli-bridge

HTTP/WebSocket bridge daemon between thunderbird-cli (or any HTTP client) and the Thunderbird-cli WebExtension. Stateless proxy, localhost-only.

Package maintainers