{"schema":"threatline.record/2","record":{"id":"CVE-2026-113601","aliases":[],"summary":"Memos before 0.27.0 Missing Authorization via ActivityService ListActivities/GetActivity","details":"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.","categories":["Unclassified"],"product":"memos","vendor":"usememos","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-113601","source_modified_at":"2026-10-23T01:44:39.769Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"memos","vendor":"usememos","versions":[{"version":"0","lessThan":"0.27.0","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-113601","source_modified_at":"2026-10-23T01:44:39.769Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"memos","ecosystem":null},"version":"0.27.0","basis":"first unaffected version stated in the CVE record"}],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00251,"percentile":0.15535,"score_date":"2026-10-23"},"published_at":"2026-10-20T15:40:28.941Z","modified_at":"2026-10-23T01:44:39.769Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-113601","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T01:44:39.769Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-113601","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/usememos/memos/issues/5651","tags":["issue-tracking"]},{"source":"CVE List","url":"https://github.com/usememos/memos/commit/04f239a2fc74f7090c779a6a7b8a08238fd31b88","tags":["patch"]},{"source":"CVE List","url":"https://github.com/usememos/memos/releases/tag/v0.27.0","tags":["release-notes"]},{"source":"CVE List","url":"https://github.com/usememos/memos/blob/v0.26.2/server/router/api/v1/activity_service.go","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/memos-before-0.27.0-missing-authorization-via-activityservice-listactivities-getactivity","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-23T01:44:29.210876Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-23T01:44:39.769Z","content_hash":"3e1c5580a8842eda339d11bb6a1764befe8401e7f3f08444c8f8db545dc6efa4"}}