Maven/com.fasterxml.jackson.core:jackson-databind CVE-2026-83557: medium 5.6, EPSS 0.72%

jackson-databind: Comparable missing from DefaultBaseTypeLimitingValidator's unsafe base types (incomplete PolymorphicTypeValidator denylist)

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 versions

Sources

• osv: GHSA-gx83-3vf8-gh7j#Maven/com.fasterxml.jackson.core:jackson-databind
• 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

CVE-2026-83557 · published 2026-09-28T20:44:25Z · modified 2026-09-28T21:00:05.608227628Z · JSON