CVE-2026-93579
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
A flaw was found in Netty's HTTP/2 stack. This vulnerability allows a remote attacker to inject prohibited characters, such as NUL, Line Feed, and Carriage Return, into HTTP/2 header field values due to insufficient validation. When these values cross an HTTP/2 to HTTP/1.1 translation boundary, they can be exploited for request smuggling, header injection, or response splitting. This could lead to unauthorized access, data manipulation, or other security bypasses.
Affected Software
| Vendor | Product | Version Range | Status |
|---|
Weaknesses
- CWE-1035: CWE-1035
Workarounds
See https://github.com/netty/netty/security/advisories/GHSA-8whp-c7w8-2m72 for fixed versions and remediation guidance.
References
- https://access.redhat.com/security/cve/CVE-2026-93579
- https://bugzilla.redhat.com/show_bug.cgi?id=2536970
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