{"action":"Upgrade oj to 3.17.3 or later.","affected":[{"fixed":"3.17.3","introduced":"0"}],"component":"oj","cve_ids":["CVE-2026-54902"],"ecosystem":"RubyGems","epss":0.00499,"exploited":false,"fixed_versions":["3.17.3"],"ghsa_id":"GHSA-m578-w5vf-rfcm","id":"tcs_01M5KEM4PBN9XFQ9NC3C0MXF6Y","modified_at":"2026-09-10T03:51:08.981168680Z","published_at":"2026-06-19T20:47:28Z","references":["https://osv.dev/vulnerability/GHSA-m578-w5vf-rfcm","https://github.com/ohler55/oj/security/advisories/GHSA-m578-w5vf-rfcm","https://github.com/ohler55/oj"],"severity":{"label":"medium","score":6.3},"sources":[{"source":"osv","source_id":"GHSA-m578-w5vf-rfcm","url":"https://osv.dev/vulnerability/GHSA-m578-w5vf-rfcm"},{"source":"nvd","source_id":"CVE-2026-54902","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54902"}],"summary":"Oj: Use-After-Free in Oj::Parser SAJ Long Key Callback"}