External Control of File Name or Path Affecting bugsink package, versions [,2.1.1)
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-PYTHON-BUGSINK-15990748
- published12 Apr 2026
- disclosed10 Apr 2026
- creditDongyangLyu Fullmoon
Introduced: 10 Apr 2026
CVE-2026-40162 (opens in a new tab)How to fix?
Upgrade bugsink to version 2.1.1 or higher.
Overview
bugsink is a Self-hosted Error Tracking
Affected versions of this package are vulnerable to External Control of File Name or Path in the artifactbundle/assemble endpoint. An authenticated attacker can create or overwrite files within locations writable by the service account by supplying crafted input after authenticating. This may result in modification or corruption of application data, uploaded assets or temporary files, and could disrupt normal application behavior. The impact depends on the deployment environment and the filesystem permissions of the running process.