{"id":"CVE-2026-113601","title":"Memos before 0.27.0 Missing Authorization via ActivityService ListActivities/GetActivity","summary":"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 enumer…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-862"],"vendor":"usememos","product":"memos","affected":["memos < 0.27.0"],"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T15:40:28.941Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-113601","references":[{"url":"https://github.com/usememos/memos/issues/5651"},{"url":"https://github.com/usememos/memos/commit/04f239a2fc74f7090c779a6a7b8a08238fd31b88"},{"url":"https://github.com/usememos/memos/releases/tag/v0.27.0","label":"memos v0.27.0 Release Notes"},{"url":"https://github.com/usememos/memos/blob/v0.26.2/server/router/api/v1/activity_service.go"},{"url":"https://www.vulncheck.com/advisories/memos-before-0.27.0-missing-authorization-via-activityservice-listactivities-getactivity","label":"VulnCheck Advisory: Memos before 0.27.0 Missing Authorization via ActivityService ListActivities/GetActivity"}],"tags":["cve.org"],"ingestedAt":"2026-10-20T16:10:53.303Z","slug":"CVE-2026-113601","body":"## Overview\n\nMemos 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.\n\n## Affected\n\n- `memos < 0.27.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}