What’s Vulnerable › Vulnerabilities

CVE-2021-47738: CSZ CMS 1.2.7 Persistent Cross-Site Scripting via Private Messaging

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-12-23 · updated 2026-06-17
• Weakness: 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.

Affected products

• Cszcms CSZ CMS: 1.2.7

References

• https://sourceforge.net/projects/cszcms/
• https://www.cszcms.com/
• https://www.exploit-db.com/exploits/48354
• https://www.vulncheck.com/advisories/csz-cms-persistent-cross-site-scripting-via-private-messaging

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