CVE-2026-42585

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-42585
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42585.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-42585
Aliases
Downstream
Related
Published
2026-05-13T18:12:39.586Z
Modified
2026-05-20T04:03:09.618685438Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
Netty: HTTP Request Smuggling due to malformed Transfer-Encoding
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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42585.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-444"
    ]
}
References

Affected packages

Git / github.com/netty/netty

Affected ranges

Type
GIT
Repo
https://github.com/netty/netty
Events
Introduced
5451fbb0effd8460f57013bb33aefeb953144ed9
Fixed
fb13125f135ab53203513ff603872a3abe84d38d

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42585.json"