PT-2026-43264 · Onlyoffice · Onlyoffice Docspace

Published 2026-05-26 · Updated 2026-05-26 · CVE-2026-38587

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions ONLYOFFICE DocSpace versions prior to 3.2.1

Description An Insecure Direct Object Reference (IDOR) flaw exists in multiple REST API endpoints. This allows authenticated users with low-level permissions, such as User or Guest, to retrieve sensitive information including the Owner's unique identifier (ID) and profile information, which is intended to be accessible only to administrators. IDOR is a type of access control flaw that occurs when an application uses user-supplied input to access objects directly without proper authorization checks.

Recommendations Update to version 3.2.1.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-38587

Affected Products

Onlyoffice Docspace

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-38587 · Security Note
• https://github.com/ONLYOFFICE/DocSpace/blob/master/CHANGELOG.md#security · Note
• https://t.me/cveNotify/164758 · Telegram Post