CVE-2026-38587

An Insecure Direct Object Reference (IDOR) vulnerability was discovered in ONLYOFFICE DocSpace before 3.2.1. The flaw exists in multiple REST API endpoints. This allows authenticated users with low-level permissions (User or Guest) to retrieve sensitive information, such as the Owner's unique identifier (ID) and profile information, which should only be accessible to administrators.

Published: 2026-05-26 Last update: 2026-05-26 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-38587 is rated Low Risk (17.4/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.01%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-38587

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-27 — 0.01% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-38587

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-38587

GitHub Security Advisory for CVE-2026-38587

GHSA-fg53-m88f-73jq · Severity: medium — An Insecure Direct Object Reference (IDOR) vulnerability was discovered in ONLYOFFICE DocSpace...

Affected software / configurations for CVE-2026-38587

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-38587

cvelogic Threat Intelligence