CVE-2017-7725

concrete5 8.1.0 places incorrect trust in the HTTP Host header during caching, if the administrator did not define a "canonical" URL on installation of concrete5 using the "Advanced Options" settings. Remote attackers can make a GET request with any domain name in the Host header; this is stored and allows for arbitrary domains to be set for certain links displayed to subsequent visitors, potentially an XSS vector.

• CWE-79

• http://hyp3rlinx.altervista.org/advisories/CONCRETE5-v8.1.0-HOST-HEADER-INJECTION.txtExploit, Third Party Advisory
• http://www.securityfocus.com/bid/97649Third Party Advisory, VDB Entry
• https://hackerone.com/reports/148300Exploit, Third Party Advisory, VDB Entry
• https://packetstormsecurity.com/files/142145/concrete5-8.1.0-Host-Header-Injection.htmlExploit, Third Party Advisory, VDB Entry
• https://www.exploit-db.com/exploits/41885/Exploit, Third Party Advisory, VDB Entry
• http://hyp3rlinx.altervista.org/advisories/CONCRETE5-v8.1.0-HOST-HEADER-INJECTION.txtExploit, Third Party Advisory
• http://www.securityfocus.com/bid/97649Third Party Advisory, VDB Entry
• https://hackerone.com/reports/148300Exploit, Third Party Advisory, VDB Entry
• https://packetstormsecurity.com/files/142145/concrete5-8.1.0-Host-Header-Injection.htmlExploit, Third Party Advisory, VDB Entry
• https://www.exploit-db.com/exploits/41885/Exploit, Third Party Advisory, VDB Entry

Published

Apr 13, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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