Quarkus 3.27.5 released - LTS maintenance release
By
Today, we released Quarkus 3.27.5, our next maintenance release for the 3.27 LTS stream.
This release contains bugfixes, documentation updates, and security fixes.
It should be a safe upgrade for anyone already using 3.27.
Security fixes
This release fixes the following CVEs:
Quarkus and direct dependencies
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CVE-2026-15075 - Eclipse Vert.x:
DefaultRedirectHandlercross-origin header propagation -
CVE-2026-15076 - Eclipse Vert.x:
WebClientSessioncross-domain cookie injection -
CVE-2026-53712 - OnGres SCRAM client: Authentication downgrade
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CVE-2026-59888 - Jackson-databind:
@JsonIgnorebypass withPropertyNamingStrategyon Java Records -
CVE-2026-59889 - Jackson-databind:
@JsonViewbypass for@JsonUnwrappedproperties during deserialization -
CVE-2026-8484 - Jansi: Heap-based buffer overflow in JNI ioctl() wrapper
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CVE-2026-55405 - LangChain4j: SQL injection in embedding store metadata filter
Netty
This release upgrades Netty to 4.1.136.Final, which fixes numerous security vulnerabilities including:
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CVE-2026-55833 - Zip bomb vulnerability in
netty-codec-http -
CVE-2026-59921 - Improper CR/LF neutralization in
netty-codec-http(multipart) -
CVE-2026-59919 - Improper CR/LF neutralization in
netty-codec-haproxy -
CVE-2026-55851 - Memory exhaustion in
netty-codec-haproxy -
CVE-2026-56745 - Memory exhaustion in
netty-codec-http -
CVE-2026-59899 - Memory exhaustion in
netty-codec-http -
CVE-2026-55831 - Resource exhaustion/DoS in
netty-codec-http -
CVE-2026-56819 - Memory leak in
netty-codec-http2 -
CVE-2026-59900 - Improper header neutralization in
netty-codec-http2 -
CVE-2026-59898 - Protocol version confusion in
netty-codec-http(websocket) -
CVE-2026-56746 - Improper access control in
netty-codec-http(CORS)
For the full list, see the Netty 4.1.136.Final release announcement.
Update
To update to Quarkus 3.27, we recommend updating to the latest version of the Quarkus CLI and run:
quarkus update --stream=3.27Note that quarkus update can update your applications from any version of Quarkus (including 2.x) to Quarkus 3.27.
Full changelog
You can get the full changelog of 3.27.5 on GitHub.
Come Join Us
We value your feedback a lot so please report bugs, ask for improvements… Let’s build something great together!
If you are a Quarkus user or just curious, don’t be shy and join our welcoming community:
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provide feedback on GitHub;
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craft some code and push a PR;
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discuss with us on Zulip and on the mailing list;
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ask your questions on Stack Overflow.
