Allocation of Resources Without Limits or Throttling in jackson-core - CVE-2026-89425
Published: September 23, 2026
Vulnerability identifier: #VU151853
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-2026-89425
CWE-ID: CWE-770
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 allocation of resources without limits or throttling in UTF8DataInputJsonParser._reportInvalidToken() when processing malformed JSON tokens through a DataInput-backed parser. A remote attacker can supply a malformed token to cause a denial of service.
Affected software
jackson-core
How to mitigate CVE-2026-89425
Install security update from vendor's website.
jackson-core - addressed in versions 2.18.11, 2.21.7, 2.22.3, 3.1.7, 3.2.3