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Public proof of conceptFix availableAwaiting NVD analysis

CVE-2026-89059

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

A public proof of concept exists; no exploitation attested.

  • Published2026-09-18
  • WeaknessCWE-409

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-09-1807:13CVE publishedCNA

Versions per branch

Products declared by the CNA33 products

As redhat, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

27 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-11

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • dogtag-pkiRocky Linux:10all versions · fixed in 0:11.9.0-6.el10_2.1.rocky.0.1
  • dogtag-pkiRed Hat:enterprise_linux:10.3all versions · fixed in 0:11.9.0-9.el10_3.1and 10 other packages
  • dogtag-pkiRed Hat:enterprise_linux:10.2all versions · fixed in 0:11.9.0-6.el10_2.1and 10 other packages
  • dogtag-pkiRed Hat:enterprise_linux_eus:10.0all versions · fixed in 0:11.6.0-3.el10_0.2and 10 other packages
  • idm-pki-caAlmaLinux:10all versions · fixed in 11.9.0-6.el10_2.1.alma.1and 7 other packages
  • pki-resteasy-coreAlmaLinux:9all versions · fixed in 3.0.26-20.el9_8.1and 3 other packages
  • resteasyUbuntu:Pro:24.04:LTSall versions · no fixed version listed
  • resteasyUbuntu:Pro:22.04:LTSall versions · no fixed version listed

17 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-89059 Red Hat Product Security28 products fixed · 16 known affected

    resteasy-core: RESTEasy: IIOImageProvider Unbounded Image Decode (Decompression-Bomb DoS)

    resteasy-core as a component of Red Hat build of Apache Camel 4 for Quarkus 3 · resteasy-core as a component of Red Hat build of Apicurio Registry 3 · resteasy-core as a component of Red Hat build of Debezium 3 · +13 more

  • RHSA-2026:95221 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.9 XP 6.0.7.GA release

  • RHSA-2026:92408 Red Hat Product Security20 products fixed

    Red Hat Security Advisory: dogtag-pki security update

  • RHSA-2026:85234 Red Hat Product Security5 products fixed

    Red Hat Security Advisory: resteasy security update

  • RHSA-2026:83520 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat build of Quarkus 3.33.4 release and security update

  • RHSA-2026:83082 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat build of Quarkus 3.27.6 release and security update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2026:95221 · 1 productBefore applying the update, make sure all previously released errata relevant to your system have been applied. Also, back up your existing installation, including all applications, configuration files, databases and database settings. For details on how to apply this update, refer to: https://acce…
  2. Vendor fix Red Hat Product Security RHSA-2026:92408 · 20 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  3. Vendor fix Red Hat Product Security RHSA-2026:83520 · 1 productBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
  4. Vendor fix Red Hat Product Security RHSA-2026:83082 · 1 productBefore applying this update, make sure all previously released errata relevant to your system have been applied. For information about how to apply this update, see https://access.redhat.com/articles/11258.
  5. No fix available, says the vendor Red Hat Product Security CVE-2026-89059 · 7 productsAffected
  6. No fix planned, says the vendor Red Hat Product Security CVE-2026-89059 · 9 productsWill not fix

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-11-11
  • CISA-ADPSSVC decisionpoc2026-09-18
  • CNACVSS 3.17.52026-11-11
  • CNAweakness (CWE)CWE-4092026-11-11
  • FIRST EPSSEPSS score1.5 %2026-11-12
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-09-18
Last Modified
2026-11-11
NVD status
Awaiting Analysis

Frequently asked questions

What is 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.

Is CVE-2026-89059 actively exploited?

A proof-of-concept exploit exists for CVE-2026-89059, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-89059?

CVE-2026-89059 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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