CVE-2026-89274
Vulnérabilité critique dans WP Recipe Maker (brechtvds)
Description
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.
Gravité et risque d'exploitation
CVE-2026-89274 obtient un score CVSS de 9.1/10, soit une gravité critique. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.68 %, ce qui la place devant 51.4 % des CVE référencées.
Que faire ?
- Vérifiez si WP Recipe Maker (versions <=10.8.1, 0) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.
Références
- https://www.wordfence.com/threat-intel/vulnerabilities/id/d6ad49ff-85eb-4d05-ba23-51d89695add3?source=cve
- https://plugins.trac.wordpress.org/browser/wp-recipe-maker/tags/10.8.1/includes/public/class-wprm-metadata.php#L553
- https://plugins.trac.wordpress.org/browser/wp-recipe-maker/tags/10.8.1/includes/public/class-wprm-metadata.php#L1028
- https://plugins.trac.wordpress.org/browser/wp-recipe-maker/tags/10.8.1/includes/public/class-wprm-metadata.php#L181
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3699793%40wp-recipe-maker&new=3699793%40wp-recipe-maker