CVE-2026-9626 – JSON API User

CVE ID :CVE-2026-9626

Published : July 3, 2026, 4:30 a.m. | 1 hour, 16 minutes ago

Description :The JSON API User plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘content’ parameter of the post_comment API endpoint in versions up to, and including, 4.1.0 This is due to insufficient input sanitization in the post_comment() function, which passes the attacker-controlled comment_content value directly to wp_insert_comment() without applying any HTML sanitization, and additionally allows the caller to set comment_approved=1 to self-approve the comment and bypass moderation. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Severity: 0.0 | NA

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