CVE-2026-23644

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Source
https://cve.org/CVERecord?id=CVE-2026-23644
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23644.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-23644
Aliases
Downstream
Related
Published
2026-01-18T22:49:29.676Z
Modified
2026-03-13T04:09:31.001423Z
Severity
  • 7.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
esm.sh has path traversal in `extractPackageTarball` that enables file writes from malicious packages
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23644.json"
}
References

Affected packages

Git / github.com/esm-dev/esm.sh

Affected ranges

Type
GIT
Repo
https://github.com/esm-dev/esm.sh
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1ad31b6352bb0a064ece812f6f360e4850e16051
Fixed
9d77b88c320733ff6689d938d85d246a3af9af16
Fixed
c62ab83c589e7b421a0e1376d2a00a4e48161093
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "136"
        }
    ]
}

Affected versions

Other
v100
v101
v102
v103
v104
v105
v106
v107
v108
v109
v110
v111
v112
v113
v114
v115
v116
v117
v119
v120
v121
v122
v123
v124
v125
v126
v127
v128
v129
v130
v131
v132
v133
v134
v135
v135_1
v34
v35
v37
v38
v39
v40
v41
v43
v44
v45
v46
v47
v49
v50
v51
v52
v53
v55
v56
v57
v59
v60
v61
v62
v63
v64
v65
v66
v67
v68
v69
v70
v71
v72
v73
v74
v75
v76
v77
v78
v79
v80
v81
v82
v83
v84
v85
v86
v87
v88
v89
v90
v91
v92
v93
v94
v95
v96
v97
v98
v99

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23644.json"