XSS in Mcb

CVE-2026-110525

The MCB WordPress plugin through 1.0.0 does not sanitise or escape request header values before storing them and later rendering them in the administrator statistics grid, allowing unauthenticated attackers to store malicious JavaScript that executes in an administrator's browser session when the statistics page is viewed.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (37.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

  • Mcb

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-110525?
CVE-2026-110525 is a high-severity vulnerability in Mcb, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-11-06.
How severe is CVE-2026-110525?
High severity. CVSS v3 base score is 8.8 out of 10.