What is CVE-2026-30661?

CVE-2026-30661 is a medium-severity vulnerability in Idreamsoft Icms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-24.

How severe is CVE-2026-30661?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Idreamsoft Icms

CVE-2026-30661

iCMS v8.0.0 contains a Cross-Site Scripting (XSS) vulnerability in the User Management component, specifically within the index.html file. This allows remote attackers to execute arbitrary web script or HTML via the regip or loginip parameters.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-03-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (21.7th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.7% 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: 0.003 · change: +0.001

Affected products

Idreamsoft Icms — versions 8.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

wang1rrr.github.io/2026/02/09/CVE-Report-iCMS-v8.0.0-XSS/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-30661?: CVE-2026-30661 is a medium-severity vulnerability in Idreamsoft Icms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-24.
How severe is CVE-2026-30661?: Medium severity. CVSS v3 base score is 6.1 out of 10.