What is CVE-2026-19698?

CVE-2026-19698 is a low-severity vulnerability in Gutenkit, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 3.5/10. Published 2026-09-02.

How severe is CVE-2026-19698?

Low severity. CVSS v3 base score is 3.5 out of 10.

Vulnerability in Gutenkit

CVE-2026-19698

The GutenKit WordPress plugin before 2.5.1 does not validate or escape style settings saved against a post before using them to build the CSS it outputs on the front end, allowing users with the Contributor role and above to inject arbitrary CSS into pages served to other users and to anonymous visitors. JavaScript execution is not possible at that role, so the impact is limited to defacement, interface redressing and forcing external resources to load.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N.

Affected products

Unknown Gutenkit

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

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

Frequently asked questions

What is CVE-2026-19698?: CVE-2026-19698 is a low-severity vulnerability in Gutenkit, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 3.5/10. Published 2026-09-02.
How severe is CVE-2026-19698?: Low severity. CVSS v3 base score is 3.5 out of 10.