Skip to main content

Mondoo

Vulnerability Management
Technology
Services

Solutions

Financial Services
Manufacturing
Healthcare

Resources

Blog
Vulnerability Database
Documentation
GitHub

Company

About
Careers
Partners
Contact

Legal

Privacy
Terms
Imprint

© 2026 Mondoo, Inc.

Log in Get Assessment

CVE-2026-42585 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-42585

CVE-2026-42585

MEDIUM6.5

Netty: HTTP Request Smuggling due to malformed Transfer-Encoding

Published May 13, 2026

Modified 3 weeks ago

Details

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

References

https://github.com/netty/netty/security/advisories/GHSA-38f8-5428-x5cv

https://www.cve.org/CVERecord?id=CVE-2026-42585

CVSS Analysis

CVSS v3.1

6.5

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

LowC:L

Integrity

LowI:L

Availability

NoneA:N

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

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedMay 13, 2026

ModifiedMay 15, 2026