Exposure of Sensitive System Information to an Unauthorized Control Sphere Affecting thunderbird package, versions [,128.10.1)[130.0b1,138.0.1)
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-10246645
- published26 May 2025
- disclosed14 May 2025
- creditDario Weißer
Introduced: 14 May 2025
NewCVE-2025-3877 (opens in a new tab)How to fix?
Upgrade thunderbird to version 128.10.1, 138.0.1 or higher.
Overview
Affected versions of this package are vulnerable to Exposure of Sensitive System Information to an Unauthorized Control Sphere via the mailbox:/// links. An attacker can download files without permission, exhaust disk space, and leak credentials by crafting malicious links.