brechtvds WP Recipe Maker Plugin up to 10.8.1 on WordPress Shortcode sanitize_metadata reviewBody injection

Summaryinfo

A vulnerability was found in brechtvds WP Recipe Maker Plugin up to 10.8.1. It has been rated as critical. Impacted is the function WPRM_Metadata::sanitize_metadata of the component Shortcode Handler. Performing a manipulation of the argument reviewBody results in injection. This vulnerability is identified as CVE-2026-89274. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in brechtvds WP Recipe Maker Plugin up to 10.8.1. It has been classified as critical. This affects the function WPRM_Metadata::sanitize_metadata of the component Shortcode Handler. The manipulation of the argument reviewBody with an unknown input leads to a injection vulnerability. CWE is classifying the issue as CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The WP Recipe Maker plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in all versions up to, and including, 10.8.1. The vulnerability exists because `WPRM_Metadata::sanitize_metadata()` recursively calls `do_shortcode()` on every scalar field of the recipe's structured metadata array — including the `reviewBody` field, which is populated verbatim from the `comment_content` of approved `wprm-comment-rating` comments — without sanitizing or stripping shortcode tokens before execution; the subsequent `wp_strip_all_tags()` and `strip_shortcodes()` calls operate only on the output string after execution has already fully occurred, providing no protection against server-side shortcode invocation. This makes it possible for unauthenticated attackers to execute arbitrary registered WordPress shortcodes server-side on every recipe page render, causing shortcode output — such as attachment captions, private post fields, or other data exposed by installed shortcodes — to be embedded in the page's JSON-LD `reviewBody` metadata and disclosed to all visitors who load the recipe page. Successful exploitation requires the attacker's rated comment to pass the site's comment approval threshold, either via auto-approval or moderator action, before the injected shortcode begins executing on page loads.

The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-89274 since 09/11/2026. 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 09/19/2026). MITRE ATT&CK project uses the attack technique T1055 for this issue.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• brechtvds

Name

• WP Recipe Maker Plugin

Version

• 10.8.0
• 10.8.1

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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