Is there a public exploit for CVE-2026-3234?

No public exploit for CVE-2026-3234 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-2026-3234?

CVE-2026-3234 scores CVSS 4.3 (v3.1), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.33%.

4.3 Medium

A flaw was found in modproxycluster.

CVE-2026-3234

A flaw was found in modproxycluster. This vulnerability, a Carriage Return Line Feed (CRLF) injection in the decodeenc() function, allows a remote attacker to bypass input validation. By injecting CRLF sequences into the cluster configuration, an attacker can corrupt the response body of INFO endpoint responses. Exploitation requires network access to the MCMP protocol port, but no authentication is needed.

Assessment

CVSS: 4.3 (v3.1)
Severity: Medium
EPSS: 0.33% 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: 12 March 2026
Last updated: 2 November 2026
Assigner: redhat

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

At the source

EUVD (ENISA)

References

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