How severe is CVE-2021-37392?

CVE-2021-37392 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-37392 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37392?

CVE-2021-37392 affects Rpcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37392?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-37392 published?

CVE-2021-37392 was published on 2021-07-26 and last updated on 2026-06-17.

CVE-2021-37392

CVE-2021-37392 is a medium-severity vulnerability in Rpcms with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Rpcms
Published: 2021-07-26
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-37392?: 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.
How severe is CVE-2021-37392?: CVE-2021-37392 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-37392 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37392?: CVE-2021-37392 affects Rpcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37392?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-37392 published?: CVE-2021-37392 was published on 2021-07-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:rpcms:rpcms:*:*:*:*:*:*:*:*

More vulnerabilities in Rpcms

CVE-2022-41475 — High (CVSS 8.8): RPCMS v3.0.2 was discovered to contain a Cross-Site Request Forgery (CSRF) which allows attackers to arbitrarily add an…
CVE-2021-37394 — High (CVSS 8.8): In RPCMS v1.8 and below, attackers can interact with API and change variable "role" to "admin" to achieve admin user…
CVE-2022-41474 — Medium (CVSS 6.5): RPCMS v3.0.2 was discovered to contain a Cross-Site Request Forgery (CSRF) which allows attackers to arbitrarily change…
CVE-2022-41473 — Medium (CVSS 6.1): RPCMS v3.0.2 was discovered to contain a reflected cross-site scripting (XSS) vulnerability in the Search function.
CVE-2023-50565 — Medium (CVSS 5.4): A cross-site scripting (XSS) vulnerability in the component /logs/dopost.html in RPCMS v3.5.5 allows attackers to…
CVE-2021-37393 — Medium (CVSS 5.4): In RPCMS v1.8 and below, the "nickname" variable is not properly sanitized before being displayed on page. Attacker can…

All CVEs affecting Rpcms →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →