CVE-2026-89425 FasterXML jackson-core - Denial of Service

FasterXML jackson-core >= 2.8.0 contains an out-of-bounds error caused by unbounded token accumulation in UTF8DataInputJsonParser._reportInvalidToken(), letting attackers cause JVM OutOfMemoryError, exploit requires malformed token input via DataInput parser.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.49% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
23 September 2026
Updated
15 October 2026
Weakness
CWE-400

Vendor fix

Update to a version later than 2.8.0 with the fix applied or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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