CVE-2026-55552

{"id": "CVE-2026-55552", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55552", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-31T15:42:22.826410Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "yamcs", "product": "yamcs", "versions": [{"status": "affected", "version": "< 5.12.0"}]}]}], "published": "2026-08-28T20:18:28.793", "references": [{"url": "https://github.com/yamcs/yamcs/commit/c7dfd24e469ae1086c23e0fe04401cb1ce4260d4", "source": "security-advisories@github.com"}, {"url": "https://github.com/yamcs/yamcs/commit/f4bc588880c166849e983aa8f65b9c8107d06091", "source": "security-advisories@github.com"}, {"url": "https://github.com/yamcs/yamcs/releases/tag/yamcs-5.11.13", "source": "security-advisories@github.com"}, {"url": "https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/yamcs/yamcs/security/advisories/GHSA-9jg3-g3wh-w9pj", "source": "security-advisories@github.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "Yamcs is a mission control framework. Prior to 5.11.13, Yamcs StaticFileHandler.locateFile resolves an unauthenticated request path without using Path.normalize and Path.toAbsolutePath to confirm that the absolute path remains within the configured staticRoots. A path containing traversal segments can escape the intended web root and return an arbitrary readable host file. The flaw is in yamcs-core/src/main/java/org/yamcs/http/StaticFileHandler.java and can disclose sensitive operating-system and application data. This issue is fixed in version 5.11.13, and the 5.12 line is fixed from version 5.12.0."}], "lastModified": "2026-09-08T21:08:37.320", "sourceIdentifier": "security-advisories@github.com"}