CVE-2021-47737

MEDIUM
Published Dec 23, 2025 Modified Dec 31, 2025 CWE-79

Description

CSZ CMS 1.2.7 contains an HTML injection vulnerability that allows authenticated users to insert malicious hyperlinks in message titles. Attackers can craft POST requests to the member messaging system with HTML-based links to potentially conduct phishing or social engineering attacks.

CVSS v3.1 Score

5.4
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor Product
cszcms csz_cms

References

Frequently Asked Questions

What is CVE-2021-47737? +
CSZ CMS 1.2.7 contains an HTML injection vulnerability that allows authenticated users to insert malicious hyperlinks in message titles. Attackers can craft POST requests to the member messaging system with HTML-based links to potentially conduct phishing or social engineering attacks. It has a CVSS v3.1 base score of 5.4 (MEDIUM).
How severe is CVE-2021-47737? +
CVE-2021-47737 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2021-47737? +
CVE-2021-47737 affects products from cszcms, specifically: csz_cms. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2021-47737? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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