What is CVE-2025-41391?

CVE-2025-41391 is a medium-severity vulnerability in Alfasado Powercms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-07-31.

How severe is CVE-2025-41391?

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

XSS in Alfasado Powercms

CVE-2025-41391

Stored cross-site scripting vulnerability exists in multiple versions of PowerCMS. If a product user accesses a malicious page, an arbitrary script may be executed on the browser.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-07-31 · 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: 0.002 (6.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Alfasado Powercms
Alfasado Inc. Powercms — versions 6.7 and earlier (PowerCMS 6.x series), 5.3 and earlier (PowerCMS 5.x series), 4.6 and earlier (PowerCMS 4.x series)

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.powercms.jp/news/release-powercms-671-531-461.html (Vendor Advisory)
jvn.jp/en/vu/JVNVU93412964/ (Third Party Advisory)

Frequently asked questions

What is CVE-2025-41391?: CVE-2025-41391 is a medium-severity vulnerability in Alfasado Powercms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-07-31.
How severe is CVE-2025-41391?: Medium severity. CVSS v3 base score is 5.4 out of 10.