Is CVE-2021-38751 in the CISA KEV catalog?

No. CVE-2021-38751 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-38751?

CVE-2021-38751 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2021-38751?

CVE-2021-38751 has an EPSS score of 2.47% (82th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-38751?

Upgrade exponentcms to 2.6 or later.

CVE & CISA-KEV Catalog

CVE-2021-38751

MEDIUMEPSS 82th pctl

4.3

CVSS v3

NVD

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.

CWE-116

How to fix

Remediation Available

exponentcmsNVD

Affected:< 2.6Fixed in:2.6CVE-2021-38751derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Exploit Intelligence

2.47%probability of exploitation in 30 days

82ndpercentile

Elevated risk: more likely to be exploited than 82% of all known CVEs.

References

Exploit1

github.com

Embed a live status badge for CVE-2021-38751

Markdown

[![CVE-2021-38751](https://tridentstack.com/cve/badge/CVE-2021-38751.svg)](https://tridentstack.com/cve/CVE-2021-38751)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-38751"><img src="https://tridentstack.com/cve/badge/CVE-2021-38751.svg" alt="CVE-2021-38751"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.