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CVE-2026-33870

HIGH

7.5

Description

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Versions 4.1.132.Final and 4.2.10.Final fix the issue.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/27/2026

Last Modified3/30/2026

Sourcenvd

Honeypot Sightings0

Affected Products

netty:netty

Weaknesses (CWE)

CWE-444

References

https://github.com/netty/netty/security/advisories/GHSA-pwqr-wmgm-9rr8(security-advisories@github.com)

https://w4ke.info/2025/06/18/funky-chunks.html(security-advisories@github.com)

https://w4ke.info/2025/10/29/funky-chunks-2.html(security-advisories@github.com)

https://www.rfc-editor.org/rfc/rfc9110(security-advisories@github.com)

IOC Correlations

No correlations recorded

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