{"action":"Upgrade com.fasterxml.jackson.core:jackson-databind to 2.18.10 (2.18.x), 2.21.6 (2.21.x) or 2.22.2 (2.22.x) or later.","affected":[{"fixed":"2.18.10","introduced":"2.11.0"},{"fixed":"2.21.6","introduced":"2.19.0"},{"fixed":"2.22.2","introduced":"2.22.0"}],"component":"com.fasterxml.jackson.core:jackson-databind","cve_ids":["CVE-2026-83557"],"ecosystem":"Maven","epss":0.00717,"exploited":false,"fixed_versions":["2.18.10","2.21.6","2.22.2"],"ghsa_id":"GHSA-gx83-3vf8-gh7j","id":"tcs_01M5N8Z8KY5FC6NTVVEPT7S5DK","modified_at":"2026-09-28T21:00:05.608227628Z","published_at":"2026-09-28T20:44:25Z","references":["https://osv.dev/vulnerability/GHSA-gx83-3vf8-gh7j","https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-gx83-3vf8-gh7j","https://nvd.nist.gov/vuln/detail/CVE-2026-83557","https://github.com/FasterXML/jackson-databind/issues/6156","https://github.com/FasterXML/jackson-databind/pull/6155","https://github.com/FasterXML/jackson-databind/commit/eb3b7fc0f9c0d27f471550ac3316b17d1987388f","https://github.com/FasterXML/jackson-databind","https://github.com/FasterXML/jackson-databind/releases/tag/jackson-databind-2.18.10","https://github.com/FasterXML/jackson-databind/releases/tag/jackson-databind-2.21.6","https://github.com/FasterXML/jackson-databind/releases/tag/jackson-databind-2.22.2","https://github.com/FasterXML/jackson-databind/releases/tag/jackson-databind-3.1.6","https://github.com/FasterXML/jackson-databind/releases/tag/jackson-databind-3.2.2"],"severity":{"label":"medium","score":5.6},"sources":[{"source":"osv","source_id":"GHSA-gx83-3vf8-gh7j#Maven/com.fasterxml.jackson.core:jackson-databind","url":"https://osv.dev/vulnerability/GHSA-gx83-3vf8-gh7j"}],"summary":"jackson-databind: Comparable missing from DefaultBaseTypeLimitingValidator's unsafe base types (incomplete PolymorphicTypeValidator denylist)"}