CVE-2026-89059 RESTEasy - Denial of Service

RESTEasy contains a denial of service caused by lack of limits on declared image dimensions in IIOImageProvider, letting remote unauthenticated attackers exhaust JVM heap via crafted images.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.79% 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
18 September 2026
Updated
15 October 2026
Weakness
CWE-409

Vendor fix

Update to the latest version with the fix for image dimension validation.

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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