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vuln-cve/data/2026/23xxx/CVE-2026-23644.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-23644",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-01-14T16:08:37.484Z",
"datePublished": "2026-01-18T22:49:29.676Z",
"dateUpdated": "2026-01-20T20:06:58.947Z"
},
"containers": {
"cna": {
"title": "esm.sh has path traversal in `extractPackageTarball` that enables file writes from malicious packages",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"lang": "en",
"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"vectorString": "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",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/esm-dev/esm.sh/security/advisories/GHSA-2657-3c98-63jq",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/esm-dev/esm.sh/security/advisories/GHSA-2657-3c98-63jq"
},
{
"name": "https://github.com/esm-dev/esm.sh/commit/9d77b88c320733ff6689d938d85d246a3af9af16",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/esm-dev/esm.sh/commit/9d77b88c320733ff6689d938d85d246a3af9af16"
},
{
"name": "https://github.com/esm-dev/esm.sh/commit/c62ab83c589e7b421a0e1376d2a00a4e48161093",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/esm-dev/esm.sh/commit/c62ab83c589e7b421a0e1376d2a00a4e48161093"
},
{
"name": "https://pkg.go.dev/vuln/GO-2025-4138",
"tags": [
"x_refsource_MISC"
],
"url": "https://pkg.go.dev/vuln/GO-2025-4138"
}
],
"affected": [
{
"vendor": "esm-dev",
"product": "esm.sh",
"versions": [
{
"version": "< 0.0.0-20260116051925-c62ab83c589e",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-01-18T22:49:29.676Z"
},
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"source": {
"advisory": "GHSA-2657-3c98-63jq",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-01-20T20:04:08.412888Z",
"id": "CVE-2026-23644",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-01-20T20:06:58.947Z"
}
}
]
}
}