What’s Vulnerable › Vulnerabilities

CVE-2021-37393

• 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: 2021-07-26 · updated 2026-06-17
• Weakness: CWE-79

Description

In RPCMS v1.8 and below, the "nickname" variable is not properly sanitized before being displayed on page. Attacker can use "update password" function to inject XSS payloads into nickname variable, and achieve stored XSS. Users who view the articles published by the injected user will trigger the XSS.

Affected products

• Rpcms: through 1.8

References

• https://gist.github.com/victomteng1997/bfa1e0e07dd22f7e0b13256eda79626f
• https://github.com/ralap-z/RPCMS/
• https://gist.github.com/victomteng1997/bfa1e0e07dd22f7e0b13256eda79626f
• https://github.com/ralap-z/RPCMS/

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