What’s Vulnerable › Vulnerabilities

CVE-2025-49574: Quarkus potential data leak when duplicating a duplicated context

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-06-23 · updated 2026-06-17
• Weakness: CWE-668

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.

Affected products

• quarkusio quarkus: from 3.21.0.CR1, < 3.24.1; from 3.16.0.CR1, < 3.20.2; before 3.15.6

References

• https://github.com/quarkusio/quarkus/commit/2b58f59f4bf0bae7d35b1abb585b65f2a66787d1
• https://github.com/quarkusio/quarkus/commit/31e8a3bfcf4e223788615d5ce25eb929ca251275
• https://github.com/quarkusio/quarkus/commit/d1ee57e7b826872b6355cfec0ae13465840e232c
• https://github.com/quarkusio/quarkus/issues/48227
• https://github.com/quarkusio/quarkus/pull/48486
• https://github.com/quarkusio/quarkus/releases/tag/3.24.1
• https://github.com/quarkusio/quarkus/security/advisories/GHSA-9623-mj7j-p9v4

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