CVE-2026-89059

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 Vector

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/7c7e6b37c8b2451a37aed9cdc6978b447456bacb
• 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