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CVE-2026-9626

MEDIUM(6.4)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Risk Signal Score21/100 — NIEDRIG
  • CVSS 6.4 — Mittel

EPSS-Score

0%

Exploit-Wahrscheinlichkeit (30 Tage)

CVSS Score

6.4

Technische Schwere

Beschreibung

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.

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