URL Redirection to Untrusted Site ('Open Redirect') 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-21755962
- published27 Oct 2026
- disclosed27 Oct 2026
- creditUnknown
Introduced: 27 Oct 2026
NewCVE-2026-118180 (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 URL Redirection to Untrusted Site ('Open Redirect') via the homeserver address parameter in the login response. An attacker can cause the application to send session requests to local files or, on Windows, to an attacker-controlled network share, potentially leaking NTLM credentials by supplying a crafted file: URL. This is only exploitable if the user logs in to a malicious or compromised homeserver and, for NTLM credential leakage, is running the application on Windows.