TI-2021-15347 Aliases CVE-2021-37393 GHSA-4g3q-mj64-82x3

In RPCMS v1.8 and below, the "nickname" variable is not properly sanitized before being…

LOW 25CWE-79Published 2021-07-26 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

EPSS 0.00527 44th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:rpcms:rpcms::::::::	up to 1.8	Vulnerable	Rpcms

cpe:2.3:a:rpcms:rpcms:*:*:*:*:*:*:*:* Versions up to 1.8 Vulnerable ·Rpcms

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-37393
2026-10-03 Alias added: GHSA-4g3q-mj64-82x3

References

Exploit 1

https://gist.github.com/victomteng1997/bfa1e0e07dd22f7e0b13256eda79626f

Other 1

https://github.com/ralap-z/RPCMS/

TI-2022-19909 RPCMS v3.0.2 was discovered to contain a Cross-Site Request Forgery (CSRF) which allows… CVSS 3.1HIGH 8.8
TI-2023-27624 A cross-site scripting (XSS) vulnerability in the component /logs/dopost.html in RPCMS… CVSS 3.1MEDIUM 5.4
TI-2021-15348 In RPCMS v1.8 and below, attackers can interact with API and change variable "role" to… CVSS 3.1HIGH 8.8
TI-2022-19907 RPCMS v3.0.2 was discovered to contain a reflected cross-site scripting (XSS) vulnerability in the Search function. CVSS 3.1MEDIUM 6.1
TI-2022-19908 RPCMS v3.0.2 was discovered to contain a Cross-Site Request Forgery (CSRF) which allows… CVSS 3.1MEDIUM 6.5
TI-2021-15346 In RPCMS v1.8 and below, the "nickname" variable is not properly sanitized before being… CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences