CVE-2026-116018

MEDIUM 4.3

ONEARMY community-platform before 2.165.2 IDOR via notification read endpoint

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-639
Vendor	onearmy
Product	community-platform
Published	Oct 24, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

ONEARMY / community-platform

0 < 2.165.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

hieuPenguinnn