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CVE-2026-120548

MEDIUM 5.3 CVSS 3.1
Published
November 7, 2026
Last modified
November 8, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-532
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • icopydoc YML for Yandex Market — Up to and including 5.10.0

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/yml-for-yandex-market/tags/5.10.0/admin/class-y4ym-admin.php#L467
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/yml-for-yandex-market/tags/5.10.0/includes/core/class-y4ym-error-log.php#L136
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/yml-for-yandex-market/tags/5.10.0/includes/feeds/import/class-y4ym-api.php#L580
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&old=3774592%40yml-for-yandex-market&new=3774592%40yml-for-yandex-market
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/33a2cf5c-d71f-45cf-8f8a-0edd47bc1974?source=cve
  • nvd.nist.gov Official NVD record