Vulnerability record/PUBLISHED/Published Mar 12, 2026 10:54:25 UTC
CVE-2026-3234
A flaw was found in mod_proxy_cluster. 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.
Base score4.3/ 10
SeverityMediumCVSS 3.1
Exploitability / impact
CVSS metric breakdown
Base severityMedium
Attack vectorAdjacentAV
Attack complexityLowAC
Privileges requiredNonePR
User interactionNoneUI
ScopeUnchangedS
Confidentiality impactNoneC
Integrity impactLowI
Availability impactNoneA
CVSS vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NCVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.
Record context
CVE Numbering Authorityredhat
Last updatedNov 6, 2026 18:24:20 UTC
PublishedMar 12, 2026 10:54:25 UTC
ReservedFeb 26, 2026 00:17:46 UTC
Credits
- Red Hat would like to thank Coty Sutherland (@csutherl) (IBM) for reporting this issue.