What’s Vulnerable › Vulnerabilities
CVE-2026-84223: Kirki 6.0.0 - 6.3.0 - Author+ Stored XSS via Unsanitized SVG Upload
- Severity: medium (CVSS 6.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-20 · updated 2026-09-21
- Weakness: CWE-79
Description
The Kirki WordPress plugin before 6.3.1 does not sanitize uploaded SVG files while making them uploadable site-wide, allowing users with author-level access and above to upload a file containing JavaScript which is then served from the site's own origin and runs in the session of anyone who opens it.
Affected products
- Kirki: from 6.0.0 before 6.3.1 — fixed in 6.3.1
How to fix
Upgrade to a fixed version: Kirki 6.3.1. Check the vendor advisory for mitigations.
References
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