ONEARMY community-platform before 2.165.2 contains an insecure direct object reference vulnerability that allows authenticated users to mark other users' notifications as read via POST /api/notifications/:id/read. Attackers can iterate sequential notification IDs to suppress unread indicators of users in the same tenant, causing them to miss replies, comments and new-content notices.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Onearmy
  • Community-platform

No data.

No data.

References
Link Providers
https://github.com/ONEARMY/community-platform/blob/v2.163.2/src/routes/api.notifications.$id.read.ts#L6-L22 cve-icon cve-icon
https://github.com/ONEARMY/community-platform/commit/571732c26caf1a0a46e5335d275cef2e19dfab08 cve-icon cve-icon
https://github.com/ONEARMY/community-platform/issues/5022 cve-icon cve-icon
https://github.com/ONEARMY/community-platform/pull/5011 cve-icon cve-icon
https://github.com/ONEARMY/community-platform/releases/tag/v2.165.2 cve-icon cve-icon
https://hackmd.io/@hieuPenguinnn/onearmy-community-platform-notification-read-idor cve-icon cve-icon cve-icon
https://www.vulncheck.com/advisories/onearmy-community-platform-before-2.165.2-idor-via-notification-read-endpoint cve-icon cve-icon
History

Thu, 29 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 26 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Onearmy
Onearmy community-platform
Vendors & Products Onearmy
Onearmy community-platform

Sat, 24 Oct 2026 11:45:00 +0000

Type Values Removed Values Added
Description ONEARMY community-platform before 2.165.2 contains an insecure direct object reference vulnerability that allows authenticated users to mark other users' notifications as read via POST /api/notifications/:id/read. Attackers can iterate sequential notification IDs to suppress unread indicators of users in the same tenant, causing them to miss replies, comments and new-content notices.
Title ONEARMY community-platform before 2.165.2 IDOR via notification read endpoint
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-24T11:40:34.948Z

Updated: 2026-10-29T15:23:13.164Z

Reserved: 2026-10-24T11:23:56.802Z

Link: CVE-2026-116018

cve-icon Vulnrichment

Updated: 2026-10-29T15:22:04.615Z

cve-icon NVD

Status : Deferred

Published: 2026-10-24T12:16:58.303

Modified: 2026-10-29T16:17:59.980

Link: CVE-2026-116018

cve-icon Redhat

No data.