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Vulnerability record · CVE-2019-25738 · published 4 June 2026

CVE-2019-25738: Missing authentication for critical function vulnerability

WordPress Hybrid Composer 1.4.6 contains an unauthenticated settings change vulnerability that allows unauthenticated attackers to modify WordPress options by exploiting the hc_ajax_save_option action. Attackers can send POST requests to the admin-ajax.php endpoint with the action parameter set to hc_ajax_save_option to enable user registration and set the default role to administrator, enabling account takeover.

9.3 CVSS 4.0 Critical EPSS 0.35% · top 74.3% CWE-306 · Missing authentication for critical function Deferred
9.3CVSS 4.0 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
22 Jul 2026Last modified by NVD

Description

WordPress Hybrid Composer 1.4.6 contains an unauthenticated settings change vulnerability that allows unauthenticated attackers to modify WordPress options by exploiting the hc_ajax_save_option action. Attackers can send POST requests to the admin-ajax.php endpoint with the action parameter set to hc_ajax_save_option to enable user registration and set the default role to administrator, enabling account takeover.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
http://wordpress.framework-y.com
http://wordpress.framework-y.com/hybrid-composer/
https://labs.sucuri.net/wptf-hybrid-composer-unauthenticated-arbitrary-options-update/
https://www.exploit-db.com/exploits/47154
https://www.vulncheck.com/advisories/wordpress-hybrid-composer-unauthenticated-settings-change

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Source: NIST National Vulnerability Database (record CVE-2019-25738), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.