CVE-2026-89059
A flaw was found in RESTEasy's IIOImageProvider, which decodes attacker-supplied image request bodies without enforcing any limit on the declared image dimensions or pixel count. A remote, unauthenticated attacker can send a small crafted image declaring enormous dimensions to trigger a very large memory allocation, exhausting the JVM heap and resulting in a denial of service.
- Published Sep 18, 2026
- CVSS 7.5 high
- 0.8% chance of exploitation in the next 30 days (EPSS)
- A fix is available