Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2026-89059
- https://bugzilla.redhat.com/show_bug.cgi?id=2519756
- https://github.com/resteasy/resteasy/commit/7c7e6b37c8b2451a37aed9cdc6978b447456
- https://github.com/resteasy/resteasy/security/advisories/GHSA-m4pc-7gc7-9vw2
- https://bugzilla.redhat.com/show_bug.cgi?id=2519756
- https://github.com/resteasy/resteasy/security/advisories/GHSA-m4pc-7gc7-9vw2
FAQ
What is CVE-2026-89059?
CVE-2026-89059 is a vulnerability with a CVSS score of 7.5 (HIGH). 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, unauthentic...
How severe is CVE-2026-89059?
CVE-2026-89059 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-89059?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.