Is there a public exploit for CVE-2026-93492?

No public exploit for CVE-2026-93492 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-93492?

CVE-2026-93492 scores CVSS 5.3 (v3.1), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.4%.

What does CVE-2026-93492 affect?

CVE-2026-93492 affects Red Hat Red Hat build of Keycloak 26.4.

5.3 Medium

A flaw was found in Netty's HTTP/2 HpackEncoder.

CVE-2026-93492

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 MAXHEADERTABLESIZE. 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).

Assessment

CVSS: 5.3 (v3.1)
Severity: Medium
EPSS: 0.4% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 18 September 2026
Last updated: 6 November 2026
Affected: Red Hat · Red Hat build of Keycloak 26.4
Assigner: redhat

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

At the source

EUVD (ENISA)

References

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