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Fencer Vulns
high 7.5

CVE-2026-16308 json

IBM Enterprise Build of Quarkus is affected by a DoS vulnerability

published 2026-07-30 3 mo ago modified 2026-10-23 16 d ago also EUVD-2026-51135

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

IBM Enterprise Build of Quarkus 3.27.1 through 3.27.4.SP2, and 3.33.1 through 3.33.2.SP2 Quarkus REST could allow a remote attacker to cause a denial of service due to unbounded accumulation of multipart MIME part-header bytes.

Patch / fix

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-16308 updated cvss 7.5

io.quarkus/quarkus-rest: io.quarkus/quarkus-vertx-http: io.quarkus.resteasy.reactive/resteasy-reactive: Quarkus REST - Unbounded multipart MIME part-header accumulation allows remote OOM denial of ser

  • Red Hat Cryostat 4 resteasy-reactive-client-processor 3.27.3.redhat-00002 Red Hat build of Apache Camel 4 for Quarkus 3 resteasy-reactive-client-processor 3.27.3.redhat-00002, resteasy-reactive-common-processor 3.33.2.redhat-00004
    affected: workaround, no fix available
  • Red Hat build of Quarkus resteasy-reactive-client-processor 3.27.3.redhat-00002
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Cryostat 4 on RHEL 9 cryostat/cryostat-rhel9 4.2.0-14, cryostat/jfr-datasource-rhel9 4.2.0-14, cryostat/cryostat-reports-rhel9 4.2.0-14
    fixed: vendor fix RHSA-2026:68333
  • Red Hat Build of Apache Camel 3.33.2.SP3 resteasy-reactive-client-processor 3.33.2.redhat-00008
    fixed: vendor fix RHSA-2026:48118
  • Red Hat build of Keycloak 26.4 rhbk/keycloak-rhel9 26.4-22, rhbk/keycloak-rhel9-operator 26.4-22, rhbk/keycloak-operator-bundle 26.4.14-1
    fixed: vendor fix RHSA-2026:50847
  • Red Hat build of Keycloak 26.4.14
    fixed: vendor fix RHSA-2026:50846
  • Red Hat build of Keycloak 26.6 rhbk/keycloak-rhel9 26.6-11, rhbk/keycloak-rhel9-operator 26.6-11, rhbk/keycloak-operator-bundle 26.6.5-1
    fixed: vendor fix RHSA-2026:50849
  • Red Hat build of Keycloak 26.6.5
    fixed: vendor fix RHSA-2026:50848
show 9 more
  • Red Hat build of Quarkus 3.27.4.SP3 resteasy-reactive-client-processor 3.27.4.redhat-00009
    fixed: vendor fix RHSA-2026:47189
  • Red Hat build of Quarkus 3.33.2.SP3 resteasy-reactive-client-processor 3.33.2.redhat-00008
    fixed: vendor fix RHSA-2026:47172
  • Red Hat OpenShift Dev Spaces 3.31 devspaces/multicluster-redirector-rhel9 1792491532
    fixed: vendor fix RHSA-2026:90321
  • Red Hat Streams for Apache Kafka 3.2.1
    fixed: vendor fix RHSA-2026:54435
  • Red Hat Cryostat 4 on RHEL 9 cryostat/cryostat-db-rhel9 4.2.0-22, cryostat/cryostat-storage-rhel9 4.2.0-22, cryostat/cryostat-rhel9-operator 4.2.0-21, cryostat/cryostat-operator-bundle 4.2.0-12, cryostat/cryostat-agent-init-rhel9 0.7.0-12, cryostat/cryostat-grafana-dashboard-rhel9 4.2.0-14, +1 more Red Hat Build of Apache Camel 3.33.2.SP3 jimfs 1.1, jna 5.8.0, bcel 6.7.0, bson 5.6.4, gax 2.74.1, icu4j 78.2, +1630 more
    not affected: vulnerable code not present
  • Red Hat build of Apicurio Registry 3 resteasy-reactive-common-processor 3.33.2.redhat-00004
    not affected: component not present
  • Red Hat build of Quarkus 3.27.4.SP3 jna 5.8.0, db2 1.21.4, h2 2.3.230, y18n 5.0.8, cliui 8.0.1, guice 5.1.0, +1009 more Red Hat build of Quarkus 3.33.2.SP3 jna 5.8.0, bson 5.6.4, h2 2.4.240, y18n 5.0.8, cliui 8.0.1, guice 5.1.0, +1018 more
    not affected: vulnerable code not present
  • Red Hat JBoss Enterprise Application Platform Expansion Pack resteasy-reactive-common 1.11.0.Final, resteasy-reactive-client-processor 3.27.3.redhat-00002, resteasy-reactive-common-processor 3.33.2.redhat-00004
    not affected: component not present
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-trustyai-service-rhel9 Red Hat OpenShift Dev Spaces 3.31 devspaces/udi-rhel9 1792708612, devspaces/code-rhel9 1792599388, devspaces/server-rhel9 1792775639, devspaces/openvsx-rhel9 1792494821, devspaces/traefik-rhel9 1792464177, devspaces/udi-base-rhel9 1792686842, +9 more Red Hat streams for Apache Kafka 2 resteasy-reactive-client-processor 3.27.3.redhat-00002, resteasy-reactive-common-processor 3.33.2.redhat-00004
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • IBM Enterprise Build of Quarkus

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.