Bug 2544825 (CVE-2026-42356)

Summary: CVE-2026-42356 httpd: httpd: arbitrary code execution via incorrect handler assignment during internal CGI redirects
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: csutherl, jclere, pjindal, plodge, rhel-process-autobot, szappis, vchlup, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in Apache HTTP Server. An attacker could achieve unintended code execution when an internal redirect generated by a Common Gateway Interface (CGI) program points to a non-executable file. If the target file resides in a directory configured for CGI execution and lacks a file extension recognized by the MIME handler, the server incorrectly treats and executes the target file as a script. This issue could allow an attacker to run unauthorized commands or code within the server context.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2545026    
Bug Blocks:    

Description OSIDB Bzimport 2026-10-01 23:06:31 UTC
Deployment of wrong handler vulnerability in Apache HTTP Server allows the target of some internal redirects from CGI programs to also be treated as CGI and executed. The target must already be in a directory enabled for CGI and have no other extension understood by mod_mime.



This issue affects Apache HTTP Server: from 2.4.60 through 2.4.68.