CVE-2026-18347 json
Kirki <= 6.1.1 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Disclosure via 'context' Parameter
published 2026-08-16 2 mo ago modified 2026-08-20 2 mo ago also EUVD-2026-59929
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 6.1.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with custom-level access and above, to read arbitrary user metadata and sensitive user record fields — including email address, assigned roles, registration date, and any user_meta values — belonging to any WordPress user including administrators, by supplying a target user ID with a user-type context to the frontend collection endpoint.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected products
- themeum Kirki – Freeform Page Builder, Website Builder & Customizer
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/fa1e0bcd-f881-4b01-b802-7cb18a22a07f?source=cve
- plugins.trac.wordpress.org /browser/kirki/tags/6.0.9/includes/API/Frontend/Controllers/CollectionController.php#L97
- plugins.trac.wordpress.org /browser/kirki/tags/6.1.1/includes/API/Frontend/Controllers/CollectionController.php#L97
- plugins.trac.wordpress.org /browser/kirki/tags/6.1.1/includes/API/Frontend/Controllers/FrontendRESTController.php#L42
- plugins.trac.wordpress.org /browser/kirki/tags/6.1.1/includes/API/Frontend/Controllers/FrontendRESTController.php#L82
- plugins.trac.wordpress.org /browser/kirki/tags/6.1.1/includes/HelperFunctions.php#L1098
- plugins.trac.wordpress.org /browser/kirki/tags/6.1.1/includes/Ajax/Users.php#L227
- plugins.trac.wordpress.org /browser/kirki/tags/6.0.9/includes/API/Frontend/Controllers/FrontendRESTController.php#L42
- plugins.trac.wordpress.org /browser/kirki/tags/6.0.9/includes/API/Frontend/Controllers/FrontendRESTController.php#L82
- plugins.trac.wordpress.org /browser/kirki/tags/6.0.9/includes/HelperFunctions.php#L1098
- plugins.trac.wordpress.org /browser/kirki/tags/6.0.9/includes/Ajax/Users.php#L227
- plugins.trac.wordpress.org /changeset?reponame=&old=3629933%40kirki&new=3629933%40kirki
Sources
- CVE List CVE-2026-18347
- NVD CVE-2026-18347
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.