CVE-2021-47738

5.1 mediumEPSS 0.3%

Medium (5.1) in cszcms csz cms. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

5.1 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

5.4 medium

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2025-12-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cszcms:csz_cms

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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