jackson-core: UTF8DataInputJsonParser._reportInvalidToken() missing maxErrorTokenLength limit -> unbounded StringBuil...

Date Oct 1, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product Maven · com.fasterxml.jackson.core:jackson-core

CVE CVE-2026-89425

High-risk advisory CVE-2026-89425

Summary

jackson-core: UTF8DataInputJsonParser._reportInvalidToken() missing maxErrorTokenLength limit -> unbounded StringBuilder growth (DoS)

Why it matters

GitHub has published a reviewed security advisory for com.fasterxml.jackson.core:jackson-core. Prioritize it with other application dependency updates, especially because EPSS places it in the 40% percentile.

Operator check

Check whether com.fasterxml.jackson.core:jackson-core is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.5%; percentile: 40%.

Sources

GitHub Advisory GHSA-7hhh-6rmp-j9qf NVD — CVE-2026-89425 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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