CVE-2021-47738

MEDIUM 5.4

CSZ CMS 1.2.7 Persistent Cross-Site Scripting via Private Messaging

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	cszcms
Product	csz cms
Published	Dec 23, 2025
Last Updated	Apr 7, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Cszcms / CSZ CMS

1.2.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Metin Yunus Kandemir