{"id":"CVE-2026-113601","aliases":["EUVD-2026-105167","GHSA-599r-q6pw-w9jj"],"status":"published","title":"Memos before 0.27.0 Missing Authorization via ActivityService ListActivities/GetActivity","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.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00306,"percentile":0.23734,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-10-20T15:40:28Z","modified":"2026-10-28T02:31:11Z","products":[{"vendor":"usememos","product":"memos"}],"references":[{"url":"https://github.com/usememos/memos/issues/5651","tags":["issue-tracking","report"]},{"url":"https://github.com/usememos/memos/commit/04f239a2fc74f7090c779a6a7b8a08238fd31b88","tags":["patch","fix"]},{"url":"https://github.com/usememos/memos/releases/tag/v0.27.0","tags":["release-notes","advisory"]},{"url":"https://github.com/usememos/memos/blob/v0.26.2/server/router/api/v1/activity_service.go","tags":["technical-description","article"]},{"url":"https://www.vulncheck.com/advisories/memos-before-0.27.0-missing-authorization-via-activityservice-listactivities-getactivity","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113601","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-599r-q6pw-w9jj"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113601.json","tags":["advisory"]},{"url":"https://github.com/usememos/memos","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-113601","title":"Memos before 0.27.0 Missing Authorization via ActivityService ListActivities/GetActivity","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.","status":"published","published":"2026-10-20T15:40:28.941Z","modified":"2026-10-23T01:44:39.769Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T13:44:29.519518Z"}],"euvd":[{"id":"EUVD-2026-105167","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.","status":"published","published":"2026-10-20T15:40:28Z","modified":"2026-10-23T01:44:39Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:59:33.524592Z"}],"ghsa":[{"id":"GHSA-599r-q6pw-w9jj","title":"Memos before 0.27.0 contains a missing authorization vulnerability in the ActivityService...","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.","status":"published","published":"2026-10-20T18:31:44Z","modified":"2026-10-20T18:31:50Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:14:04.153849Z"}],"nvd":[{"id":"CVE-2026-113601","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.","status":"published","published":"2026-10-20T16:17:09.373Z","modified":"2026-10-23T02:16:55.45Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:13:01.161484Z"}],"osv":[{"id":"CVE-2026-113601","title":"Memos before 0.27.0 Missing Authorization via ActivityService ListActivities/GetActivity","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.","status":"published","published":"2026-10-20T15:40:28.941Z","modified":"2026-10-28T02:31:11.793509267Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:44:56.310988Z"}]}}