CVE-2026-93492

Description

A flaw was found in Netty's HTTP/2 HpackEncoder. A remote attacker can exploit this by sending HTTP/2 SETTINGS frames with a very large MAX_HEADER_TABLE_SIZE. This causes the HpackEncoder to store an excessive number of unique headers, leading to increased CPU usage and memory consumption, ultimately resulting in a Denial of Service (DoS).

CVSS Vector

References

• https://access.redhat.com/security/cve/CVE-2026-93492
• https://bugzilla.redhat.com/show_bug.cgi?id=2536895