Arbitrary File Upload Affecting tar package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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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Start learning- Snyk IDSNYK-CONAN-TAR-15922366
- published7 Apr 2026
- disclosed6 Apr 2026
- creditGuillermo de Angel Garcia
Introduced: 6 Apr 2026
NewCVE-2026-5704 (opens in a new tab)How to fix?
There is no fixed version for tar.
Overview
Affected versions of this package are vulnerable to Arbitrary File Upload. An attacker can introduce unauthorized files with arbitrary content by providing a specially crafted archive that bypasses pre-extraction inspection mechanisms.
Workaround
This vulnerability can be mitigated by avoiding extraction of archives from untrusted sources or by processing untrusted archives within a sandboxed environment.