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vuln-cve/data/2026/53xxx/CVE-2026-53940.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-53940",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-06-11T15:46:12.318Z",
"datePublished": "2026-09-21T15:35:37.770Z",
"dateUpdated": "2026-09-21T18:47:14.680Z"
},
"containers": {
"cna": {
"title": "Conda: Entry-point path traversal in noarch:python install (arbitrary file write) — canonical Python implementation",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"lang": "en",
"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-73",
"lang": "en",
"description": "CWE-73: External Control of File Name or Path",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/conda/conda/security/advisories/GHSA-9m8m-c4j3-rj2c",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/conda/conda/security/advisories/GHSA-9m8m-c4j3-rj2c"
},
{
"name": "https://github.com/conda/conda/pull/16168",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/conda/conda/pull/16168"
},
{
"name": "https://github.com/conda/conda/commit/3987c86ccd5527177e96b48bd4dc1777dd2c9baa",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/conda/conda/commit/3987c86ccd5527177e96b48bd4dc1777dd2c9baa"
},
{
"name": "https://github.com/conda/conda/releases/tag/26.5.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/conda/conda/releases/tag/26.5.2"
}
],
"affected": [
{
"vendor": "conda",
"product": "conda",
"versions": [
{
"version": "< 26.5.2",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-09-21T15:35:37.770Z"
},
"descriptions": [
{
"lang": "en",
"value": "Conda is a system-level binary package and environment manager that runs on major operating systems and platforms. Prior to 26.5.2, parse_entry_point_def in conda/common/path/python.py accepted an unvalidated entry-point command from a noarch:python package's info/link.json metadata. CreatePythonEntryPointAction in conda/core/path_actions.py interpolated that command into target_short_path, and PrefixPathAction.target_full_path joined it to the installation prefix without verifying that the result remained under the intended bin or Scripts directory. create_python_entry_point in conda/gateways/disk/create.py then wrote an executable wrapper to the resulting path. A malicious package could use path separators, traversal segments, or an absolute command path to write outside the prefix or overwrite another in-prefix entry point during default install and environment transactions. Out-of-prefix writes require the target parent directory to exist, while an overwritten entry point can execute attacker-controlled Python when later invoked with the installing user's privileges. This issue is fixed in version 26.5.2."
}
],
"source": {
"advisory": "GHSA-9m8m-c4j3-rj2c",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/conda/conda/security/advisories/GHSA-9m8m-c4j3-rj2c",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-21T18:46:47.887956Z",
"id": "CVE-2026-53940",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-21T18:47:14.680Z"
}
}
]
}
}