CVE-2021-37392
When the API functions are enabled, the attacker can use API to update user nickname with XSS payload and achieve stored XSS.
Does this matter?
Lower severity and a low EPSS score (0.53%). Track it; it rarely justifies an emergency change on its own.
Description
In RPCMS v1.8 and below, the "nickname" variable is not properly sanitized before being displayed on page. When the API functions are enabled, the attacker can use API to update user nickname with XSS payload and achieve stored XSS. Users who view the articles published by the injected user will trigger the XSS.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.53% probability · 44th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- rpcms/rpcms
- Source
- cve@mitre.org
EPSS 0.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://gist.github.com/victomteng1997/bfa1e0e07dd22f7e0b13256eda79626fExploit, Third Party Advisory
- https://github.com/ralap-z/RPCMS/Product
- https://gist.github.com/victomteng1997/bfa1e0e07dd22f7e0b13256eda79626fExploit, Third Party Advisory
- https://github.com/ralap-z/RPCMS/Product
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.