Servers and applications
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,…
- Severity
- Medium 6.1
- Published
- 13 Apr 2017
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Exploit chance
- 2.8% in the next 30 daysHigher than 86% of CVEs. EPSS by FIRST, 11 Nov 2026
- Weakness
- Cross-site scripting (CWE-79)
- Attack
- Over the network · No login needed · Needs someone to click or open something
- Attacker can
- Read some data · Change some data
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- Sources
- NVD
Description
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.
Affected software
| Software | Affected versions |
|---|---|
Concrete CMSServers and applications · cpe:a:concretecms:concrete_cms |
|