The YML for Yandex Market plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 5.10.0 via the 'y4ym_check_action' parameter. This makes it possible for unauthenticated attackers to extract the merchant's plaintext Yandex Market API key written to the publicly accessible log file at wp-content/uploads/y4ym/yml-for-yandex-market.log, granting full control over the merchant's marketplace catalogue, prices, and stock. Exploitation requires that the targeted feed has a stored Yandex Market API key and that the y4ym_keeplogs option is enabled — both conditions that represent normal, documented plugin usage actively encouraged by the plugin's own support and feedback workflow.
History

Thu, 12 Nov 2026 16:30:00 +0000

Type Values Removed Values Added
First Time appeared Icopydoc
Icopydoc yml For Yandex Market
Wordpress-extensions
Wordpress-extensions yml For Yandex Market
Vendors & Products Icopydoc
Icopydoc yml For Yandex Market
Wordpress-extensions
Wordpress-extensions yml For Yandex Market

Sun, 08 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 07 Nov 2026 09:30:00 +0000

Type Values Removed Values Added
Description The YML for Yandex Market plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 5.10.0 via the 'y4ym_check_action' parameter. This makes it possible for unauthenticated attackers to extract the merchant's plaintext Yandex Market API key written to the publicly accessible log file at wp-content/uploads/y4ym/yml-for-yandex-market.log, granting full control over the merchant's marketplace catalogue, prices, and stock. Exploitation requires that the targeted feed has a stored Yandex Market API key and that the y4ym_keeplogs option is enabled — both conditions that represent normal, documented plugin usage actively encouraged by the plugin's own support and feedback workflow.
Title YML for Yandex Market <= 5.10.0 - Unauthenticated Sensitive Information Exposure through Log File via 'y4ym_check_action' Parameter via admin-post.php
Weaknesses CWE-532
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published: 2026-11-07T09:25:45.776Z

Updated: 2026-11-08T19:05:22.969Z

Reserved: 2026-11-02T16:24:53.444Z

Link: CVE-2026-120548

cve-icon Vulnrichment

Updated: 2026-11-08T18:55:23.613Z

cve-icon NVD

Status : Deferred

Published: 2026-11-07T10:17:09.880

Modified: 2026-11-08T19:17:36.190

Link: CVE-2026-120548

cve-icon Redhat

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