Externally Controlled Reference to a Resource in Another Sphere Affecting thunderbird package, versions [,153.6)[154,159)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-THUNDERBIRD-21755964
- published27 Oct 2026
- disclosed27 Oct 2026
- creditUnknown
Introduced: 27 Oct 2026
NewCVE-2026-118179 (opens in a new tab)How to fix?
Upgrade thunderbird to version 153.6, 159 or higher.
Overview
Affected versions of this package are vulnerable to Externally Controlled Reference to a Resource in Another Sphere through the handling of news: and snews: links referencing message-IDs. An attacker can cause the application to connect to arbitrary hosts and ports, potentially sending unmodified line breaks and crafted commands to internal services accessible from the user's network by enticing a user to click a specially crafted link. In addition, connections to certain servers may occur without TLS encryption.