CVE-2021-38751
MEDIUM
4.3
CVSS Score
Published: August 16, 2021 at 01:53 PM UTC
Updated: June 17, 2026 at 04:02 AM UTC
1 product affected across 1 vendorExponentcms
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Severity
MEDIUM4.3
Exploit prediction
EPSS 2%
Description
A HTTP Host header attack exists in ExponentCMS 2.6 and below in /exponent_constants.php. A modified HTTP header can change links on the webpage to an arbitrary value, leading to a possible attack vector for MITM.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 2.6
Affected range stops below 2.6, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (1)
x_refsource_MISCExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://github.com/exponentcms/exponent-cms/issues/1544CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-116
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