{"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-2026-55521"],"ecosystem":"Maven","epss":0.00523,"exploited":false,"fixed_versions":["5.13.2","5.12.8"],"ghsa_id":"GHSA-962x-ccwf-8x6p","id":"tcs_01M5N8P8KMX1DY0EKA1VMMR6KP","modified_at":"2026-08-28T17:25:37.300781Z","published_at":"2026-08-28T17:09:35Z","references":["https://osv.dev/vulnerability/GHSA-962x-ccwf-8x6p","https://github.com/yamcs/yamcs/security/advisories/GHSA-962x-ccwf-8x6p","https://github.com/yamcs/yamcs"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"GHSA-962x-ccwf-8x6p","url":"https://osv.dev/vulnerability/GHSA-962x-ccwf-8x6p"}],"summary":"Yamcs Core API has Multiple Missing Function Level Access Control vulnerabilities"}