CVE-2026-113601 Details
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.
A missing authorization vulnerability has been identified in Memos versions prior to 0.27.0, specifically within the ActivityService's ListActivities and GetActivity API methods. This vulnerability allows authenticated users to access all users' activity records. Low-privileged attackers can exploit this by enumerating sequential activity IDs to retrieve creator IDs, timestamps, and memo-comment references, including activities related to other users' private memos.
Users can update to Memos version 0.27.0 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 20, 2026CISA-ADP
Assessed Oct 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/usememos/memos/blob/v0.26.2/server/router/api/v1/activity_service.go | [email protected] | Source CodeVendor |
| https://github.com/usememos/memos/commit/04f239a2fc74f7090c779a6a7b8a08238fd31b88 | [email protected] | Source CodeVendor |
| https://github.com/usememos/memos/issues/5651 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/usememos/memos/releases/tag/v0.27.0 | [email protected] | Release NotesVendor |
| https://www.vulncheck.com/advisories/memos-before-0.27.0-missing-authorization-via-activityservice-listactivities-getactivity | [email protected] | AdvisoryBundleRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Memos | >= 0, < 0.27.0 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 23, 2026 | CVE Modified | CISA-ADP |
| Oct 20, 2026 | New CVE Received | [email protected] |