CVE-2026-104895 Jackson Smile - Denial of Service

Jackson Smile parser contains an out-of-memory and negative array size issue caused by unchecked raw-binary length prefix from untrusted input in NonBlockingByteArrayParser, letting attackers crash processing threads, exploit requires ability to submit crafted data.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.38% 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
28 October 2026
Updated
29 October 2026
Weakness
CWE-789

Vendor fix

Update to the latest version with the asynchronous Smile parser overflow guard applied.

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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