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Fencer Intel
medium 6.4

CVE-2025-49574 json

Quarkus potential data leak when duplicating a duplicated context

published last yr. modified last mo. also EUVD-2025-18925 , GHSA-9623-mj7j-p9v4

cvss
6.4
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 20%
public exploits
0
none known

Summary

Quarkus is a Cloud Native, (Linux) Container First framework for writing Java applications. In versions prior to 3.24.1, 3.20.2, and 3.15.6, there is a potential data leak when duplicating a duplicated context. Quarkus extensively uses the Vert.x duplicated context to implement context propagation. With the new semantic data from one transaction can leak to the data from another transaction. From a Vert.x point of view, this new semantic clarifies the behavior. A significant amount of data is stored in the duplicated context, including request scope, security details, and metadata. Duplicating a duplicated context is rather rare and is only done in a few places. This issue has been patched in version 3.24.1, 3.20.2, and 3.15.6.

Patch / fix

  • maven io.quarkus:quarkus-vertx 3.15.6, 3.20.2, 3.24.1
  • quarkus quarkus 3.15.6, 3.20.2, 3.24.1
  • io.quarkus quarkus-vertx 3.15.6, 3.20.2, 3.24.1

Is CVE-2025-49574 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2025-49574 updated cvss 6.4

io.quarkus/quarkus-vertx: Quarkus potential data leak

  • Red Hat Cryostat 4 quarkus-vertx Red Hat OpenShift Serverless openshift-serverless-1/kn-ekb-receiver-rhel8, openshift-serverless-1/kn-ekb-dispatcher-rhel8, openshift-serverless-1/kn-ekb-post-install-rhel8, openshift-serverless-1/kn-ekb-webhook-kafka-rhel8, openshift-serverless-1/kn-ekb-kafka-controller-rhel8, openshift-serverless-1/kn-eventing-istio-controller-rhel8, +9 more Red Hat build of Apache Camel - HawtIO 4 quarkus-vertx Red Hat build of Apache Camel 4 for Quarkus 3 quarkus-cxf-bom, quarkus-camel-bom Red Hat build of Apicurio Registry 2 quarkus-vertx Red Hat build of Apicurio Registry 3 quarkus-vertx
    +12 more products
    Red Hat build of Debezium 2 quarkus-vertx Red Hat build of Debezium 3 quarkus-vertx Red Hat build of OptaPlanner 8 quarkus-vertx Red Hat Data Grid 8 quarkus-vertx Red Hat Fuse 7 quarkus-vertx Red Hat Integration Camel K 1 quarkus-vertx Red Hat JBoss Enterprise Application Platform 8 quarkus-vertx Red Hat JBoss Enterprise Application Platform Expansion Pack quarkus-vertx Red Hat OpenShift AI (RHOAI) rhoai/odh-dashboard-rhel9, rhoai/odh-trustyai-service-rhel8, rhoai/odh-trustyai-service-rhel9 Red Hat Process Automation 7 quarkus-vertx Red Hat streams for Apache Kafka quarkus-vertx Red Hat streams for Apache Kafka 2 quarkus-vertx
    affected: workaround, no fix available “Fix deferred”
  • Red Hat build of Quarkus 3.15.6
    fixed: vendor fix RHSA-2025:13012
  • Red Hat build of Quarkus 3.20.2.redhat quarkus-vertx 3.20.2.redhat-00003
    fixed: vendor fix RHSA-2025:13010
  • Red Hat Streams for Apache Kafka 3.0.0
    fixed: vendor fix RHSA-2025:12511
  • Red Hat Streams for Apache Kafka 3.1.0
    fixed: vendor fix RHSA-2025:23417
  • Red Hat build of Quarkus 3.20.2.redhat jna 5.8.0, lit 3.2.1, bson 5.3.1, db2 1.20.6, h2 2.3.230, y18n 5.0.8, +1017 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
no
Technical impact
total
Assessed
last yr.

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 6.4 CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
GitHub 3.1 6.4 CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
maven io.quarkus:quarkus-vertx
<3.15.6
>=3.16.0.CR1, <3.20.2
>=3.21.0.CR1, <3.24.1
3.15.6
3.20.2
3.24.1

Affected products

  • quarkusio quarkus

Classification

Weakness
  • CWE-668 Exposure of Resource to Wrong Sphere

References

Sources

Fencer Intel 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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.