{"cve":"CVE-2026-11977","nvd":{"published":"2026-08-05T08:16:30.217","modified":"2026-08-12T21:00:37.147","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-89"],"references":["https://plugins.trac.wordpress.org/browser/wp-post-author/trunk/includes/multi-authors/wpa-multi-authors.php#L110","https://plugins.trac.wordpress.org/browser/wp-post-author/trunk/includes/multi-authors/wpa-multi-authors.php#L231","https://plugins.trac.wordpress.org/browser/wp-post-author/trunk/includes/multi-authors/wpa-multi-authors.php#L312","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=","https://www.wordfence.com/threat-intel/vulnerabilities/id/ca5cb925-6f95-4f81-92d0-5f3c8e5f7d59?source=cve"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:10.050265369+00:00"},"epss":{"cve":"CVE-2026-11977","score":0.00413,"percentile":0.3557,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}