CVE-2026-68494 jackson-core: Async parser maxNumberLength bypass via chunked digit accumulation (incomplete fix for CVE-2026-18401 / GHSA-72hv-8253-57qq)

The fix released in jackson-core 2.18.6 and 2.21.1 for CVE-2026-18401 GHSA-72hv-8253-57qq, number length constraint bypass in the non-blocking parser is incomplete. This record covers the remaining bypass. The earlier fix wired validateIntegerLength into a new setIntLength helper and invoked it...

CVE-2026-18401 jackson-core: Number length constraint bypass in non-blocking (async) JSON parser leads to potential denial of service

The non-blocking asynchronous JSON parser in jackson-core does not enforce the maxNumberLength constraint defined in StreamReadConstraints default: 1000 characters. An attacker able to submit JSON to an application that uses the async parser API can supply a number token of arbitrary length,...

Security Bulletin: Vulnerability in jackson-core-2.15.2.jar

Summary Vulnerability in jackson-core-2.15.2.jar Vulnerability Details ID:WS-2026-0003 DESCRIPTION: The non-blocking async JSON parser in jackson-core bypasses the maxNumberLength constraint default: 1000 characters defined in StreamReadConstraints. This allows an attacker to send JSON with...

Security Bulletin: IBM SPSS Modeler is affected by a jackson-core async parser DoS vulnerability (WS-2026-0003)

Summary IBM SPSS Modeler is affected by a jackson-core async parser DoS vulnerability WS-2026-0003. This has been addressed in the remediation section. Vulnerability Details ID:WS-2026-0003 DESCRIPTION: The non-blocking async JSON parser in jackson-core bypasses the maxNumberLength constraint...