Kirki < 6.2.1 - Unauthenticated Arbitrary Shortcode Execution via Form Email Actions
Priority LOW 35CWE-74Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
The Kirki WordPress plugin before 6.2.1 does not properly authorise its front-end form submission REST routes and passes attacker-controlled input through shortcode execution, allowing unauthenticated users to run any shortcode registered on the site, which on a default install leads to disclosure of the site administrator's email address and an arbitrary-recipient mail relay from the victim's domain.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00367 30th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Kirki (Unknown): 6.2.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
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 | before 6.2.1 | 6.2.1 | Patch available | CNA |
- Kirki VendorUnknown Affected before 6.2.1 Fixed in 6.2.1 Patch available CNA
Remediation
- Fix · CNA Kirki (Unknown) Fixed in 6.2.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16747
- 2026-10-03 Alias added: GHSA-p469-wjxr-57rr
References
Sources
- CVE-2026-16747 · CVE Program
- CVE-2026-16747 · NVD
- FIRST EPSS
- GHSA-p469-wjxr-57rr · GitHub Advisory Database · CC BY 4.0
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