{"id":"CVE-2026-55547","summary":"Yamcs: Missing Authorization on Role and Privilege Enumeration Endpoints Allows Any Authenticated User to Disclose Full Security Configuration","details":"Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs omits SystemPrivilege.ControlAccess checks from IamApi.listRoles, IamApi.getRole, and IamApi.listPrivileges in yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java. Any authenticated account can call GET /api/roles, GET /api/roles/{name}, and GET /api/privileges to enumerate available system privileges and configured role mappings. The disclosure reveals security configuration that can support targeted privilege-escalation attempts. This issue is fixed in versions 5.12.8 and 5.13.2.","aliases":["GHSA-cvw4-55pp-3hfq"],"modified":"2026-08-30T08:17:22.266720Z","published":"2026-08-28T17:11:34.332Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-285","CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55547.json"},"references":[{"type":"WEB","url":"https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.8"},{"type":"WEB","url":"https://github.com/yamcs/yamcs/releases/tag/yamcs-5.13.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55547.json"},{"type":"ADVISORY","url":"https://github.com/yamcs/yamcs/security/advisories/GHSA-cvw4-55pp-3hfq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55547"},{"type":"FIX","url":"https://github.com/yamcs/yamcs/commit/c2aec1c242e656e48b52c7f87deea88183bb592d"},{"type":"FIX","url":"https://github.com/yamcs/yamcs/commit/dcaec5f0b2f4231b8e313e94d79a937169c9e0ba"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/yamcs/yamcs","events":[{"introduced":"0"},{"introduced":"8bf5af6fe227bbf8ead15e60644b7ddbf345d623"},{"fixed":"144335f15d7730d7fc833122c8c8a6f1906fea9f"},{"fixed":"50d73a44d136f0dd2828fa11f69f1fe1fc5583f7"},{"fixed":"c2aec1c242e656e48b52c7f87deea88183bb592d"},{"fixed":"dcaec5f0b2f4231b8e313e94d79a937169c9e0ba"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"5.12.8"},{"introduced":"5.13.0"},{"fixed":"5.13.2"}]}}],"versions":["yamcs-5.13.1","yamcs-5.13.0","yamcs-5.12.7","yamcs-5.12.6","yamcs-5.12.5","yamcs-5.12.4","yamcs-5.12.3","yamcs-5.12.2","yamcs-5.12.1","yamcs-5.12.0","yamcs-5.11.7","yamcs-5.9.8","yamcs-5.11.6","yamcs-5.11.5","yamcs-5.11.4","yamcs-5.10.9","yamcs-5.11.3","yamcs-5.11.2","yamcs-5.11.1","yamcs-5.11.0","yamcs-5.10.8","yamcs-5.10.7","yamcs-5.10.6","yamcs-5.10.5","yamcs-5.10.4","yamcs-5.10.3","yamcs-5.10.2","yamcs-5.10.1","yamcs-5.10.0","yamcs-5.9.7","yamcs-5.9.6","yamcs-5.9.5","yamcs-5.9.4","yamcs-5.9.3","yamcs-5.9.2","yamcs-5.9.1","yamcs-5.9.0","yamcs-5.8.8","yamcs-5.8.7","yamcs-5.8.6","yamcs-5.8.5","yamcs-5.8.4","yamcs-5.8.3","yamcs-5.8.2","yamcs-5.8.0","yamcs-5.8.1","yamcs-5.7.10","yamcs-5.7.9","yamcs-5.7.8","yamcs-5.7.7","yamcs-5.7.6","yamcs-5.7.5","yamcs-5.7.4","yamcs-5.7.3","yamcs-5.7.2","yamcs-5.7.1","yamcs-5.7.0","yamcs-5.6.2","yamcs-5.5.7","yamcs-5.6.1","yamcs-5.6.0","yamcs-5.5.6","before-removing-cfdp-half-implemented-features","yamcs-5.5.5","yamcs-5.5.4","yamcs-5.5.3","yamcs-5.5.2","yamcs-5.5.1","yamcs-5.5.0","yamcs-5.3.5","yamcs-5.4.3","yamcs-5.4.2","yamcs-5.4.1","yamcs-5.4.0","yamcs-5.2.0","yamcs-5.3.4","yamcs-5.3.3","yamcs-5.3.2","yamcs-5.3.1","yamcs-5.3.0","yamcs-5.1.3","yamcs-5.1.2","yamcs-5.1.1","yamcs-5.1.0","yamcs-5.0.1","yamcs-5.0.0","yamcs-4.10.9","yamcs-4.10.8","yamcs-4.10.7","yamcs-4.10.6","yamcs-4.10.5","yamcs-4.10.4","yamcs-4.10.3","yamcs-4.10.2","yamcs-4.10.1","yamcs-4.10.0","yamcs-4.9.5","yamcs-4.9.4","yamcs-4.9.3","yamcs-4.9.2","yamcs-4.9.1","yamcs-4.9.0","yamcs-4.8.1","yamcs-4.8.0","yamcs-4.7.3","yamcs-4.7.2","yamcs-4.7.1","yamcs-4.7","yamcs-4.4.2","yamcs-4.4.1","yamcs-4.4.0","yamcs-4.3.1","yamcs-4.3.0","yamcs-4.2.2","yamcs-4.2.1","yamcs-4.2.0","yamcs-4.1.2","yamcs-4.1.1","yamcs-4.0.1","yamcs-3.4.0","yamcs-3.3.0","yamcs-3.2.2","yamcs-3.2.1","yamcs-3.2.0","yamcs-3.1.2","yamcs-3.1.1","yamcs-3.1.0","yamcs-3.0.0","yamcs-0.30.0","v0.29.4","v0.29.3-20160608","v0.29.3","v0.29.1","v0.29.1-20160127","v0.29.1-20160119","v0.29.1-20151214","v0.29.0","v0.28.0","v0.28.0-20150903","v0.28.0-20150902-2","v0.28.0-20150902","v0.28.0-20150901","v0.28.0-20150828","v0.28.0-20150827","v0.28.0-20150826","v0.28.0-20150825","v0.28.0-20150824","v0.28.0-20150820","v0.28.0-20150817","v0.28.0-20150811","v0.26.1","v0.26.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55547.json","vanir_signatures_modified":"2026-08-30T08:17:22Z","vanir_signatures":[{"deprecated":false,"digest":{"line_hashes":["232282968932972800082801096580240434953","60576927984923567418537545231673021881","313228899616222788019753108077313380620","162068205316453730483629819051453057470","57298432122150906857088488454467174094","156578492344758777228167695537068589609","162713685907445426641105130311474415478","205168343961565118737753196865659668148","58394147200045413990253589515562518558","127834260758273104020509062975772566271","210588733322963582918168887606948468430","334365059468288634214301424057953675264"],"threshold":0.9},"id":"CVE-2026-55547-27412437","signature_type":"Line","signature_version":"v1","source":"https://github.com/yamcs/yamcs/commit/dcaec5f0b2f4231b8e313e94d79a937169c9e0ba","target":{"file":"yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java"}},{"deprecated":false,"digest":{"function_hash":"91827562747284810027265939865502572718","length":442},"id":"CVE-2026-55547-276245f6","signature_type":"Function","signature_version":"v1","source":"https://github.com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