Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Esm | Esm.Sh | < 136 |
Related Weaknesses (CWE)
References
- https://github.com/esm-dev/esm.sh/commit/9d77b88c320733ff6689d938d85d246a3af9af1Patch
- https://github.com/esm-dev/esm.sh/commit/c62ab83c589e7b421a0e1376d2a00a4e4816109Patch
- https://github.com/esm-dev/esm.sh/security/advisories/GHSA-2657-3c98-63jqVendor Advisory
- https://pkg.go.dev/vuln/GO-2025-4138ExploitVendor Advisory
FAQ
What is CVE-2026-23644?
CVE-2026-23644 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 incompl...
How severe is CVE-2026-23644?
CVE-2026-23644 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23644?
Check the references section above for vendor advisories and patch information. Affected products include: Esm Esm.Sh.