EUVD-2026-22756

| CVE-2026-34213 MEDIUM

2026-04-14 [email protected]

Authentication Bypass

5.4

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Lifecycle Timeline

patch_available

Apr 16, 2026 - 05:29 EUVD

0.71.0

Analysis Generated

Apr 14, 2026 - 22:43 vuln.today

DescriptionNVD

Docmost is open-source collaborative wiki and documentation software. Starting in version 0.3.0 and prior to version 0.71.0, improper authorization in Docmost allows a low-privileged authenticated user to overwrite another page's attachment within the same workspace by supplying a victim attachmentId to POST /api/files/upload. This is a remote integrity issue requiring no victim interaction. Version 0.71.0 contains a patch.

AnalysisAI

Docmost versions 0.3.0 through 0.70.x allow authenticated users with low privileges to overwrite arbitrary attachments belonging to other users within the same workspace via improper authorization checks on the POST /api/files/upload endpoint. An attacker can supply a victim's attachmentId to modify or corrupt files without user interaction, compromising document integrity across the workspace. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

Full analysis requires sign-in

Get intelligence summaries, risk assessment, exploit details, threat intel, and remediation guidance.

EUVD-2026-22756 vulnerability details – vuln.today

Back