{"action":"Upgrade oj to 3.17.3 or later.","affected":[{"fixed":"3.17.3","introduced":"0"}],"component":"oj","cve_ids":["CVE-2026-54900"],"ecosystem":"RubyGems","epss":0.00516,"exploited":false,"fixed_versions":["3.17.3"],"ghsa_id":"GHSA-9cv6-qcjw-4grx","id":"tcs_01M5KEJASAYQ92NDD5R1BMY1S1","modified_at":"2026-09-10T03:50:49.379821956Z","published_at":"2026-06-19T20:47:23Z","references":["https://osv.dev/vulnerability/GHSA-9cv6-qcjw-4grx","https://github.com/ohler55/oj/security/advisories/GHSA-9cv6-qcjw-4grx","https://github.com/ohler55/oj"],"severity":{"label":"medium","score":6.3},"sources":[{"source":"osv","source_id":"GHSA-9cv6-qcjw-4grx","url":"https://osv.dev/vulnerability/GHSA-9cv6-qcjw-4grx"},{"source":"nvd","source_id":"CVE-2026-54900","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54900"}],"summary":"Oj: Negative-Size memcpy in Oj::Parser create_id Attribute Handling"}