CVE-2026-42356

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{"affected_release": [{"advisory": "RHSA-2026:74858", "cpe": "cpe:/a:redhat:hummingbird:1", "package": "httpd-main-2.4.69-1.hum1", "product_name": "Red Hat Hardened Images", "release_date": "2026-10-02T00:00:00Z"}], "bugzilla": {"description": "httpd: httpd: arbitrary code execution via incorrect handler assignment during internal CGI redirects", "id": "2544825", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2544825"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "verified"}, "cwe": "CWE-430", "details": ["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."], "mitigation": {"lang": "en:us", "value": "If CGI functionality is not required, disable CGI execution by commenting out `mod_cgi` or `mod_cgid` in the Apache configuration (for example, in `/etc/httpd/conf.modules.d/01-cgi.conf`), or by removing `ExecCGI` from `Options` directives in `/etc/httpd/conf/httpd.conf`.\nApply the changes to the running service:\nsystemctl reload httpd\nCaveats: Disabling CGI modules or execution options will prevent any existing CGI applications from functioning.\nWarning: Reloading or restarting the httpd service may temporarily disrupt active connections."}, "name": "CVE-2026-42356", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "httpd:2.4/httpd", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-10-01T15:54:35Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-42356\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-42356\nhttp://www.openwall.com/lists/oss-security/2026/10/01/11\nhttps://httpd.apache.org/security/vulnerabilities_24.html"], "threat_severity": "Low"}

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