MEDIUM

CVE-2025-49574

CVSS v3

6.4

MEDIUM

EPSS Score

0.3 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

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

io.quarkus:quarkus-vertxMavenfrom 3.21.0.CR1 · fixed in 3.24.1

Vendor advisories

CVE-2025-49574 Red Hat Product Security4 products fixed · 35 known affected
io.quarkus/quarkus-vertx: Quarkus potential data leak
quarkus-vertx as a component of Cryostat 4 · openshift-serverless-1/kn-ekb-dispatcher-rhel8 as a component of OpenShift Serverless · openshift-serverless-1/kn-ekb-kafka-controller-rhel8 as a component of OpenShift Serverless
RHSA-2025:23417 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Streams for Apache Kafka 3.1.0 release and security update
RHSA-2025:13010 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Red Hat build of Quarkus 3.20.2 release and security update
RHSA-2025:13012 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Red Hat build of Quarkus 3.15.6 release and security update
RHSA-2025:12511 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Streams for Apache Kafka 3.0.0 release and security update

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Published: 2025-06-23
Last Modified: 2026-04-15

Frequently asked questions

What is CVE-2025-49574?

Is CVE-2025-49574 actively exploited?

Active exploitation of CVE-2025-49574 has not been confirmed. Its EPSS score was 0.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-49574?

CVE-2025-49574 has a CVSS v3 base score of 6.4 (MEDIUM severity), with vector string CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.

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