Kirki < 6.2.1 - Unauthenticated Arbitrary Shortcode Execution via Form Email Actions (CVE-2026-16747) | HOL Guard CVE

Medium · CVSS 6.5CVE-2026-16747

Kirki < 6.2.1 - Unauthenticated Arbitrary Shortcode Execution via Form Email Actions

Answer in brief

CVE-2026-16747 records a Medium severity (CVSS 6.5) vulnerability in Kirki < 6.2.1 - Unauthenticated Arbitrary Shortcode Execution via Form Email Actions. The current sources do not mark it as known exploited. The current feed maps Unknown/Kirki (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 12, 2026Updated Aug 26, 2026Source checked Sep 27, 2026First seen by HOL Aug 12, 2026Material review Aug 26, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Kirki (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/Kirkigeneric	>=0 <6.2.1	6.2.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/Kirki.
Review the reported fix. Update Unknown/Kirki to 6.2.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 12, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.