CVE-2021-47738

MEDIUM
Published Dec 23, 2025 Modified Jan 5, 2026 CWE-79

Description

CSZ CMS 1.2.7 contains a persistent cross-site scripting vulnerability that allows unauthorized users to embed malicious JavaScript in private messages. Attackers can send messages with script payloads in the user-agent header, which will execute when an admin views the message in the backend dashboard.

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-2021-47738? +
CSZ CMS 1.2.7 contains a persistent cross-site scripting vulnerability that allows unauthorized users to embed malicious JavaScript in private messages. Attackers can send messages with script payloads in the user-agent header, which will execute when an admin views the message in the backend dashboard. It has a CVSS v3.1 base score of 5.4 (MEDIUM).
How severe is CVE-2021-47738? +
CVE-2021-47738 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-2021-47738? +
CVE-2021-47738 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-2021-47738? +
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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