Medium 4.3Published Oct 24, 2026

CVE-2026-116018ONEARMY community-platform before 2.165.2 IDOR via notification read endpoint

Updated under an hour ago (Oct 28, 2026, 5:10 AM ET)

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It affects ONEARMY community-platform. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for ONEARMY community-platform

Exploited in the last 30 days

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.

CVSS: 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 24, 2026
First seen by InfoSec Signals: Oct 24, 2026

Affected products

Affected products

ONEARMY community-platform onearmy:community_platform (from the name)	before 2.165.2	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.