themeum Kirki Plugin up to 6.2.0 on WordPress kirki_data server-side request forgery

Summaryinfo

A vulnerability classified as critical has been found in themeum Kirki Plugin up to 6.2.0. The impacted element is an unknown function. Performing a manipulation of the argument kirki_data results in server-side request forgery. This vulnerability is reported as CVE-2026-18335. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in themeum Kirki Plugin up to 6.2.0. It has been classified as critical. This affects some unknown processing. The manipulation of the argument kirki_data with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to Blind Server-Side Request Forgery in all versions up to, and including, 6.2.0 via the 'kirki_data' Parameter. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.

The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-18335 since 07/29/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/24/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• themeum

Name

• Kirki Plugin

Version

• 6.0
• 6.1
• 6.2.0

CPE 2.3info

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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