XSS in Ymc Filter

CVE-2026-16559

The YMC Filter WordPress plugin before 3.12.9 does not sanitize SVG files uploaded through one of its icon upload features and permits their upload by low-privileged users, allowing users with the Author role and above to upload a file containing JavaScript that executes in the site's origin when the file is viewed.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (13.9th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-16559: held from 0.002 to 0.002.

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

Affected products

  • Ymc Filter — versions 0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-16559?
CVE-2026-16559 is a medium-severity vulnerability in Ymc Filter, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-08-08.
How severe is CVE-2026-16559?
Medium severity. CVSS v3 base score is 6.8 out of 10.