{"id":"CVE-2026-55552","title":"Yamcs is a mission control framework","summary":"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…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-22"],"vendor":"yamcs","product":"org.yamcs:yamcs-core","affected":["org.yamcs:yamcs-core < 5.11.13"],"patched":["org.yamcs:yamcs-core 5.12.0"],"published":"2026-08-28","updated":"2026-09-08","sourceUpdated":"2026-09-08T21:08:37.320","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55552","references":[{"url":"https://github.com/yamcs/yamcs/commit/c7dfd24e469ae1086c23e0fe04401cb1ce4260d4","label":"security-advisories@github.com"},{"url":"https://github.com/yamcs/yamcs/commit/f4bc588880c166849e983aa8f65b9c8107d06091","label":"security-advisories@github.com"},{"url":"https://github.com/yamcs/yamcs/releases/tag/yamcs-5.11.13","label":"security-advisories@github.com"},{"url":"https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.0","label":"security-advisories@github.com"},{"url":"https://github.com/yamcs/yamcs/security/advisories/GHSA-9jg3-g3wh-w9pj","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-9jg3-g3wh-w9pj"}],"tags":["nvd","ghsa","maven"],"epss":0.00428,"epssPercentile":0.36546,"aliases":["GHSA-9jg3-g3wh-w9pj"],"ecosystem":"maven","ingestedAt":"2026-08-28T17:22:56.003Z","slug":"CVE-2026-55552","body":"## Overview\n\nYamcs 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-55552)\n\nAffected packages:\n\n- `org.yamcs:yamcs-core < 5.11.13`\n\nPatched in:\n\n- `org.yamcs:yamcs-core 5.12.0`\n\nSource: https://github.com/advisories/GHSA-9jg3-g3wh-w9pj","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}