{"action":"Upgrade ujson to 5.12.1 or later.","affected":[{"fixed":"5.12.1","introduced":"0"}],"component":"ujson","cve_ids":["CVE-2026-44660"],"ecosystem":"PyPI","epss":0.00421,"exploited":false,"fixed_versions":["5.12.1"],"ghsa_id":"GHSA-c38f-wx89-p2xg","id":"tcs_01M5KFC1CX9S96NG2BJ46VV4X7","modified_at":"2026-09-10T03:51:05.194201525Z","published_at":"2026-05-12T22:25:11Z","references":["https://osv.dev/vulnerability/GHSA-c38f-wx89-p2xg","https://github.com/ultrajson/ultrajson/security/advisories/GHSA-c38f-wx89-p2xg","https://nvd.nist.gov/vuln/detail/CVE-2026-44660","https://github.com/ultrajson/ultrajson/commit/82af1d0ac01d09aa40c887b460d44b9d9f4bccd9","https://github.com/ultrajson/ultrajson","https://github.com/ultrajson/ultrajson/releases/tag/5.12.1"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-c38f-wx89-p2xg","url":"https://osv.dev/vulnerability/GHSA-c38f-wx89-p2xg"}],"summary":"UltraJSON has a Memory Leak in ujson.dump() on Write Failure"}