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HIGH

CVE-2026-17553

CVSS v3

7.2

HIGH

EPSS Score

0.4 %

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

The WP EasyCart plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 5.9.3. This is due to the ec_ajax_save_page_default_options() AJAX handler iterating over every $_POST key and passing it directly into update_option() without any allowlist, while gating the handler only on 'manage_options' OR the plugin's custom 'wpec_manager' capability. The plugin's built-in 'wpec_store_manager' role holds 'wpec_manager' but not 'manage_options', and the required nonc

Technical details

CVSS v3 Vector
3.1
Published
2026-09-09
Last Modified
2026-09-09

Frequently asked questions

What is CVE-2026-17553?

The WP EasyCart plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 5.9.3. This is due to the ec_ajax_save_page_default_options() AJAX handler iterating over every $_POST key and passing it directly into update_option() without any allowlist, while gating the handler only on 'manage_options' OR the plugin's custom 'wpec_manager' capability. The plugin's built-in 'wpec_store_manager' role holds 'wpec_manager' but not 'manage_options', and the required nonc

Is CVE-2026-17553 actively exploited?

Active exploitation of CVE-2026-17553 has not been confirmed. The EPSS score is 0.4%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-17553?

CVE-2026-17553 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string 3.1.

Is CVE-2026-17553 affecting your environment?

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