Resource exhaustion in jackson-core - CVE-2026-68498
Published: September 14, 2026
Vulnerability identifier: #VU149500
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-68498
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in ReaderBasedJsonParser when parsing an oversized JSON object property name from String, Reader, or char[] input. A remote attacker can submit a crafted JSON document containing a sufficiently long property name to cause a denial of service.
Byte-input and non-blocking parsers are not affected.
Affected software
jackson-core
How to mitigate CVE-2026-68498
Install security update from vendor's website.
jackson-core - addressed in versions 2.18.10, 2.21.6, 2.22.2, 3.1.6, 3.2.2