CVE-2020-21434

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-10-04 · updated 2026-06-17
Weakness: CWE-79

Description

Maccms 10 contains a cross-site scripting (XSS) vulnerability in the Editing function under the Member module. This vulnerability is exploited via a crafted payload in the nickname text field.

Affected products

Magicblack MacCMS: 10.0

References

https://github.com/Ksharp12138/maccms_userinfo_xss/blob/master/maccms_xss.md
https://github.com/Ksharp12138/maccms_userinfo_xss/blob/master/maccms_xss.md

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