CVE-2026-93562

Summary

A flaw was found in Netty's HTTP/1 decoder. Incomplete validation of malformed Transfer-Encoding headers allows a remote attacker to perform HTTP request smuggling. By sending specially crafted HTTP requests, an attacker can inject arbitrary HTTP requests, potentially bypassing security controls or accessing unauthorized resources.

Affected Software

Weaknesses

• CWE-1035: CWE-1035

Workarounds

See https://github.com/netty/netty/security/advisories/GHSA-hcvj-94mj-jp5c for fixed versions and remediation guidance.

References

• https://access.redhat.com/security/cve/CVE-2026-93562
• https://bugzilla.redhat.com/show_bug.cgi?id=2536951

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