CVE-2026-53940

{"id": "CVE-2026-53940", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53940", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-21T18:46:47.887956Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "conda", "product": "conda", "versions": [{"status": "affected", "version": "< 26.5.2"}]}]}], "published": "2026-09-21T16:17:09.010", "references": [{"url": "https://github.com/conda/conda/commit/3987c86ccd5527177e96b48bd4dc1777dd2c9baa", "source": "security-advisories@github.com"}, {"url": "https://github.com/conda/conda/pull/16168", "source": "security-advisories@github.com"}, {"url": "https://github.com/conda/conda/releases/tag/26.5.2", "source": "security-advisories@github.com"}, {"url": "https://github.com/conda/conda/security/advisories/GHSA-9m8m-c4j3-rj2c", "source": "security-advisories@github.com"}, {"url": "https://github.com/conda/conda/security/advisories/GHSA-9m8m-c4j3-rj2c", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-73"}]}], "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."}], "lastModified": "2026-09-24T21:16:28.120", "sourceIdentifier": "security-advisories@github.com"}