CVE-2026-113601
Memos before 0.27.0 Missing Authorization via ActivityService ListActivities/GetActivity
usememos memos
CVSS
5.3MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.25%Chance of exploitation activity in the next 30 days, higher than 15% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 0.27.0memosCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
Memos before 0.27.0 contains a missing authorization vulnerability in the ActivityService ListActivities and GetActivity API methods that allows authenticated users to view all users' activity records. Low-privileged attackers can enumerate sequential activity IDs to obtain creator IDs, timestamps, and memo-comment references, including activity on other users' private memos.
Text from CVE List
Affected versions 1
- memosaffected: all versions before 0.27.0CVE List
References 5
- github.com/usememos/memos/commit/04f239a2fc74f7090c779a6a7b8a08238fd31b88Fixvia CVE List
- github.com/usememos/memos/releases/tag/v0.27.0Fixvia CVE List
- vulncheck.com/advisories/memos-before-0.27.0-missing-authorization-via-activityservice-listactivities-getactivityAdvisoryvia CVE List
- github.com/usememos/memos/issues/5651Referencevia CVE List
- github.com/usememos/memos/blob/v0.26.2/server/router/api/v1/activity_service.goReferencevia CVE List