What is CVE-2021-41502?

CVE-2021-41502 is a medium-severity vulnerability in Intelliants Subrion Cms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-06-11.

How severe is CVE-2021-41502?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Intelliants Subrion Cms

CVE-2021-41502

An issue was discovered in Subrion CMS v4.2.1 There is a stored cross-site scripting (XSS) vulnerability that can execute malicious JavaScript code by modifying the name of the uploaded image, closing the html tag, or adding the onerror attribute.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-06-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (44.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Intelliants Subrion Cms — versions 4.2.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/intelliants/subrion/issues/885 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-41502?: CVE-2021-41502 is a medium-severity vulnerability in Intelliants Subrion Cms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-06-11.
How severe is CVE-2021-41502?: Medium severity. CVSS v3 base score is 5.4 out of 10.