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Vulnerability · Published Sep 18, 2026 · Assigned by redhat

CVE-2026-89059Resteasy-core: resteasy: iioimageprovider unbounded image decode (decompression-bomb dos)

High 7.5

In plain English

A high-severity security flaw in Red Hat build of Apache Camel 4 for Quarkus 3 from Red Hat. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.5%top 25.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10idm-pki-acme11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-base11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-ca11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-java11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-kra11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-server11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-tools11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:9pki-resteasy-client3.0.26-20.el9_8.1ALSA-2026:85234
AlmaLinux:9pki-resteasy-core3.0.26-20.el9_8.1ALSA-2026:85234
AlmaLinux:9pki-resteasy-jackson2-provider3.0.26-20.el9_8.1ALSA-2026:85234
AlmaLinux:9pki-resteasy-servlet-initializer3.0.26-20.el9_8.1ALSA-2026:85234
AlmaLinux:10python3-idm-pki11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
Debian:12resteasy3.0no fix listedDEBIAN-CVE-2026-89059
Debian:13resteasy3.0no fix listedDEBIAN-CVE-2026-89059
Debian:14resteasy3.0no fix listedDEBIAN-CVE-2026-89059
Rocky Linux:10dogtag-pki0:11.9.0-6.el10_2.1.rocky.0.1RLSA-2026:92408
Rocky Linux:9resteasy0:3.0.26-20.el9_8.1RLSA-2026:85234
Ubuntu:26.04:LTSresteasyno fix listedUBUNTU-CVE-2026-89059
Ubuntu:26.10resteasyno fix listedUBUNTU-CVE-2026-89059
Ubuntu:22.04:LTSresteasy3.0no fix listedUBUNTU-CVE-2026-89059
Ubuntu:24.04:LTSresteasy3.0no fix listedUBUNTU-CVE-2026-89059
Ubuntu:26.04:LTSresteasy3.0no fix listedUBUNTU-CVE-2026-89059
Ubuntu:26.10resteasy3.0no fix listedUBUNTU-CVE-2026-89059

Affected products (as reported)

VendorProductVersions
Red Hat RESTEasy 0 – before 6.2.19.Final7.0.0.Alpha1 – before 7.0.5.Final
Red Hat Red Hat build of Quarkus 3.27.6.redhat see references
Red Hat Red Hat build of Quarkus 3.33.4.redhat see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support see references
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 see references
Red Hat Red Hat build of Apache Camel 4 for Quarkus 3 see references
Red Hat Red Hat build of Apicurio Registry 3 see references
Red Hat Red Hat build of Debezium 3 see references
Red Hat Red Hat Build of Keycloak see references
Red Hat Red Hat Build of Keycloak see references
Red Hat Red Hat Certificate System 10 see references
Red Hat Red Hat Certificate System 11 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Fuse 7 see references
Red Hat Red Hat Fuse 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 8 see references
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack see references
Red Hat Red Hat Satellite 6 see references
Red Hat Red Hat Single Sign-On 7 see references

Weakness: CWE-409 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References