CVE-2026-89059
Resteasy-core: resteasy: iioimageprovider unbounded image decode (decompression-bomb dos)
CVSS Score
7.5
EPSS Score
0.8%
EPSS Percentile
55th
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.
| CWE | CWE-409 |
| Vendor | red hat |
| Published | Sep 18, 2026 |
| Last Updated | Oct 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Red Hat /
0 < 6.2.19.Final 7.0.0.Alpha1 < 7.0.5.Final
Red Hat / Red Hat build of Quarkus 3.27.6.redhat
All versions affected Red Hat / Red Hat build of Quarkus 3.33.4.redhat
All versions affected Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat build of Apache Camel 4 for Quarkus 3
All versions affected Red Hat / Red Hat build of Apicurio Registry 3
All versions affected Red Hat / Red Hat build of Debezium 3
All versions affected Red Hat / Red Hat Build of Keycloak
All versions affected Red Hat / Red Hat Build of Keycloak
All versions affected Red Hat / Red Hat Certificate System 10
All versions affected Red Hat / Red Hat Certificate System 11
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Fuse 7
All versions affected Red Hat / Red Hat Fuse 7
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 7
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 7
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 7
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 7
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 8
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack
All versions affected Red Hat / Red Hat Satellite 6
All versions affected Red Hat / Red Hat Single Sign-On 7
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:83082 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:83520 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:85234 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:92408 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-89059 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2519756 github.com: https://github.com/resteasy/resteasy/commit/7c7e6b37c8b2451a37aed9cdc6978b447456bacb github.com: https://github.com/resteasy/resteasy/security/advisories/GHSA-m4pc-7gc7-9vw2
Credits
Red Hat would like to thank Yu Bao (PayPal Cyber Security Team) for reporting this issue.