{"action":"Upgrade org.yamcs:yamcs-core to 5.12.8 (5.12.x) or 5.13.2 (5.13.x) or later.","affected":[{"fixed":"5.13.2","introduced":"5.13.0"},{"fixed":"5.12.8","introduced":"0"}],"component":"org.yamcs:yamcs-core","cve_ids":["CVE-2026-55547"],"ecosystem":"Maven","epss":0.00342,"exploited":false,"fixed_versions":["5.13.2","5.12.8"],"ghsa_id":"GHSA-cvw4-55pp-3hfq","id":"tcs_01M5N8TD621J1THMTAM8VMQ262","modified_at":"2026-08-28T17:40:35.501609Z","published_at":"2026-08-28T17:13:23Z","references":["https://osv.dev/vulnerability/GHSA-cvw4-55pp-3hfq","https://github.com/yamcs/yamcs/security/advisories/GHSA-cvw4-55pp-3hfq","https://github.com/yamcs/yamcs/commit/c2aec1c242e656e48b52c7f87deea88183bb592d","https://github.com/yamcs/yamcs/commit/dcaec5f0b2f4231b8e313e94d79a937169c9e0ba","https://github.com/yamcs/yamcs","https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.8","https://github.com/yamcs/yamcs/releases/tag/yamcs-5.13.2"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GHSA-cvw4-55pp-3hfq","url":"https://osv.dev/vulnerability/GHSA-cvw4-55pp-3hfq"}],"summary":"Yamcs's Missing Authorization on Role and Privilege Enumeration Endpoints Allows Any Authenticated User to Disclose Full Security Configuration"}