What is CVE-2026-120548?

CVE-2026-120548 is a medium-severity vulnerability in Icopydoc Yml For Yandex Market, classified under Insertion of Sensitive Information into Log File. CVSS score: 5.3/10. Published 2026-11-07.

How severe is CVE-2026-120548?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in Icopydoc Yml For Yandex Market

CVE-2026-120548

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.

Published 2026-11-07 · last modified 2026-11-08.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Icopydoc Yml For Yandex Market

Weakness classification (CWE)

CWE-532 — Insertion of Sensitive Information into Log File

References

Frequently asked questions

What is CVE-2026-120548?: CVE-2026-120548 is a medium-severity vulnerability in Icopydoc Yml For Yandex Market, classified under Insertion of Sensitive Information into Log File. CVSS score: 5.3/10. Published 2026-11-07.
How severe is CVE-2026-120548?: Medium severity. CVSS v3 base score is 5.3 out of 10.