esm.sh is a no-build content delivery network (CDN) for web development. Prior to Go pseeudoversion 0.0.0-20260116051925-c62ab83c589e, the software has a path traversal vulnerability due to an incomplete fix. `path.Clean` normalizes a path but does not prevent absolute paths in a malicious tar file. Commit https://github.com/esm-dev/esm.sh/commit/9d77b88c320733ff6689d938d85d246a3af9af16, corresponding to pseudoversion 0.0.0-20260116051925-c62ab83c589e, fixes this issue.
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Affected Vendors & Products
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Fixes
Solution
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Workaround
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References
History
Sun, 18 Jan 2026 23:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | esm.sh is a no-build content delivery network (CDN) for web development. Prior to Go pseeudoversion 0.0.0-20260116051925-c62ab83c589e, the software has a path traversal vulnerability due to an incomplete fix. `path.Clean` normalizes a path but does not prevent absolute paths in a malicious tar file. Commit https://github.com/esm-dev/esm.sh/commit/9d77b88c320733ff6689d938d85d246a3af9af16, corresponding to pseudoversion 0.0.0-20260116051925-c62ab83c589e, fixes this issue. | |
| Title | esm.sh has path traversal in `extractPackageTarball` that enables file writes from malicious packages | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV4_0
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-01-18T22:49:29.676Z
Reserved: 2026-01-14T16:08:37.484Z
Link: CVE-2026-23644
Vulnrichment
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NVD
Status : Received
Published: 2026-01-18T23:15:48.547
Modified: 2026-01-18T23:15:48.547
Link: CVE-2026-23644
Redhat
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OpenCVE Enrichment
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Weaknesses