Vulnerability Details CVE-2026-23644
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 24.1%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-23644
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cpe:2.3:a:esm:esm.sh:135_1
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cpe:2.3:a:esm:esm.sh:135_2
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cpe:2.3:a:esm:esm.sh:135_3
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cpe:2.3:a:esm:esm.sh:135_4
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cpe:2.3:a:esm:esm.sh:135_5
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cpe:2.3:a:esm:esm.sh:135_6
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cpe:2.3:a:esm:esm.sh:135_7
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