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CVE-2026-9626

MEDIUM
6.4
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-9626
State
PUBLISHED
Assigner
Wordfence
Reserved
2026-05-26 17:20 UTC
Published
2026-07-03 04:30 UTC
Last updated
2026-07-03 04:30 UTC
Primary CWE
CWE-79
CWE-79 Improper Neutralization of Input During Web Page Gene…
Vendor / Product
parorrey / JSON API User
Sources
cve.org  ·  NVD

Severity & Metrics

6.4 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Affected products (1)
VendorProductPlatformVersions
parorrey JSON API User — 0 ≤ 4.1.0
Weakness (CWE)
CWESourceDescription
CWE-79 cna CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.4 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
References (6)
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