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Fencer Vulns
medium 5.3

CVE-2026-19625 json

IBM Enterprise Build of Quarkus is affected by multiple vulnerabilities

published 2026-09-08 2 mo ago modified 2026-09-10 59 d ago also EUVD-2026-74190

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits
0
none known

Summary

When a Quarkus application has multiple endpoints secured by individual OIDC provider tenants, such as "/oidc-provider1" that is secured by the OIDC Provider 1 and "/oidc-provider2" that is secured by the OIDC Provider 2, and an optional token introspection cache is also enabled, then a valid token issued by the OIDC Provider 1 that can be used to access "/oidc-provider1" can also be used to access "/oidc-provider2" that is secured by another OIDC Provider 2.

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-2026-19625 updated cvss 8.7

quarkus-oidc: Quarkus OIDC: Cross-tenant authentication bypass via shared token-introspection cache

  • Red Hat Exploit Intelligence exploit-intelligence-tech-preview/agent-client-rhel9 Red Hat build of Apicurio Registry 3 quarkus-oidc
    affected: no fix available
  • Red Hat build of Quarkus 3.27.5.SP1 quarkus-oidc 3.27.5.redhat-00004
    fixed: vendor fix RHSA-2026:62515
  • Red Hat build of Quarkus 3.33.3.SP1 quarkus-oidc 3.33.3.redhat-00005
    fixed: vendor fix RHSA-2026:62555
  • Red Hat build of Quarkus 3.27.5.SP1 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 3.33.3.SP1 jna 5.8.0, h2 2.4.240, y18n 5.0.8, cliui 8.0.1, guice 5.1.0, wasm 2.15.3, +1018 more
    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
1 mo ago

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

  • IBM Enterprise Build of Quarkus

Classification

Weakness

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.