What is CVE-2025-9981?

CVE-2025-9981 is a medium-severity vulnerability in Opensolution Quick.cms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2025-10-23.

How severe is CVE-2025-9981?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Opensolution Quick.cms

CVE-2025-9981

QuickCMS is vulnerable to multiple Stored XSS in slider editor functionality (sliders-form). Malicious attacker with admin privileges can inject arbitrary HTML and JS into website, which will be rendered/executed on every page. By default…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (7.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Opensolution Quick.cms — versions 6.8
Opensolution Quickcms — versions 6.8

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cvd@cert.pl (Third Party Advisory, third-party-advisory)
cvd@cert.pl (Product, product)

Frequently asked questions

What is CVE-2025-9981?: CVE-2025-9981 is a medium-severity vulnerability in Opensolution Quick.cms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2025-10-23.
How severe is CVE-2025-9981?: Medium severity. CVSS v3 base score is 4.8 out of 10.