What is CVE-2026-13340?

CVE-2026-13340 is a medium-severity vulnerability in Svg Support, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-03.

How severe is CVE-2026-13340?

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

XSS in Svg Support

CVE-2026-13340

The SVG Support WordPress plugin before 2.5.17 does not apply its SVG sanitisation to uploaded files using the .svgz extension, even though it registers and serves them as SVG, allowing a user permitted to upload SVGs (such as an Author on…

Vulnerability class: XSS (Cross-Site Scripting)

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.

Affected products

Unknown Svg Support — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-13340?: CVE-2026-13340 is a medium-severity vulnerability in Svg Support, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-03.
How severe is CVE-2026-13340?: Medium severity. CVSS v3 base score is 6.1 out of 10.