Medium severity · published Oct 24, 2026
CVE-2026-116018
ONEARMY community-platform before 2.165.2 IDOR via notification read endpoint
New
4.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
community-platform · ONEARMY
before 2.165.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116018
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116018
github.com
https://github.com/ONEARMY/community-platform/blob/v2.163.2/src/routes/api.notifications.$id.read.ts#L6-L22
github.com
https://github.com/ONEARMY/community-platform/commit/571732c26caf1a0a46e5335d275cef2e19dfab08
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/releases/tag/v2.165.2
hackmd.io
https://hackmd.io/@hieuPenguinnn/onearmy-community-platform-notification-read-idor