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jackson-databind has a PolymorphicTypeValidator bypass via generic type parameters that allows arbitrary class instantiation

jackson-databind has a PolymorphicTypeValidator bypass via generic type parameters that allows arbitrary class instantiation

CVE-2026-54512Published 2 months agoUpdated 5 days agoSource: OSV

Affected packages

  • com.fasterxml.jackson.core:jackson-databind— 2.10.0 → 2.18.8
  • tools.jackson.core:jackson-databind— 3.0.0 → 3.1.4

Exploit signal

Known exploited (CISA KEV)
No
EPSS score
—
EPSS percentile
—

EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.

Sources

Structured record: https://osv.dev/vulnerability/GHSA-j3rv-43j4-c7qm

Recommended response stack

Snyk — Scan your dependencies in CI and fix this vulnerability.→

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jackson-databind has a PolymorphicTypeValidator bypass via generic type parameters that allows arbitrary class instantiation | HackTribune