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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-11977 Detail

Description

The WP Post Author – Author Box, Multiple Authors, Guest Authors & Custom Avatars plugin for WordPress is vulnerable to generic SQL Injection via the 'wpma_metabox_authors_list' parameter in all versions up to, and including, 3.9.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with author-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. Exploitation is a two-step chain: an attacker first saves a crafted guest-author token via the wpma_metabox_authors_list parameter during post creation or editing, then triggers the injection when any admin user loads the post list screen at /wp-admin/edit.php, causing the injected SQL result to be rendered in the Authors column.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://plugins.trac.wordpress.org/browser/wp-post-author/trunk/includes/multi-authors/wpa-multi-authors.php#L110 Wordfence
https://plugins.trac.wordpress.org/browser/wp-post-author/trunk/includes/multi-authors/wpa-multi-authors.php#L231 Wordfence
https://plugins.trac.wordpress.org/browser/wp-post-author/trunk/includes/multi-authors/wpa-multi-authors.php#L312 Wordfence
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3577603%40wp-post-author%2Ftrunk%2Fincludes%2Fmulti-authors%2Fwpa-multi-authors.php&old=3166002%40wp-post-author%2Ftrunk%2Fincludes%2Fmulti-authors%2Fwpa-multi-authors.php&sfp_email=&sfph_mail= Wordfence
https://www.wordfence.com/threat-intel/vulnerabilities/id/ca5cb925-6f95-4f81-92d0-5f3c8e5f7d59?source=cve Wordfence

Weakness Enumeration

CWE-ID CWE Name Source
CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') Wordfence  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-11977
NVD Published Date:
08/05/2026
NVD Last Modified:
08/12/2026
Source:
Wordfence