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CVE-2026-9626 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:6.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://plugins.trac.wordpress.org/browser/json-api-user/tags/4.1.0/controllers/User.php#L1007	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/json-api-user/tags/4.1.0/controllers/User.php#L979	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/json-api-user/tags/4.1.0/controllers/User.php#L995	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/changeset/3576431/json-api-user/trunk/controllers/User.php	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/changeset?old_path=%2Fjson-api-user/tags/4.1.0&new_path=%2Fjson-api-user/tags/4.1.2	[email protected]	Release NotesVendor
https://www.wordfence.com/threat-intel/vulnerabilities/id/c41b0370-2881-4053-98b1-9c70251a3b63?source=cve	[email protected]	AdvisoryRemedy

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
JSON API User	<= 4.1.0 (semver)
CPE cpe:2.3:a:parorrey:json_api_user::::::wordpress::* Remediation Upgrade: 4.1.2moderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Jul 6, 2026	CVE Modified	CISA-ADP
Jul 3, 2026	New CVE Received	[email protected]