Kirki 6.0.0 - 6.3.0 - Author+ Stored XSS via Unsanitized SVG Upload
Priority LOW 32CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00431 37th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Kirki (Unknown): 6.3.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Kirki | 6.0.0 to before 6.3.1 | 6.3.1 | Patch available | CNA |
- Kirki VendorUnknown Affected 6.0.0 to before 6.3.1 Fixed in 6.3.1 Patch available CNA
Remediation
- Fix · CNA Kirki (Unknown) Fixed in 6.3.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-84223
- 2026-10-03 Alias added: GHSA-96mm-r72j-4pv6
References
Sources
- CVE-2026-84223 · CVE Program
- CVE-2026-84223 · NVD
- FIRST EPSS
- GHSA-96mm-r72j-4pv6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences