CVE-2026-6634: Usememos Memos

Medium severity, CVSS 6.3. EPSS: 0.3% chance of exploitation in the next 30 days.

A weakness has been identified in usememos memos up to 0.22.1. This affects the function memos_access_token of the file src/App.tsx of the component UpdateInstanceSetting. This manipulation of the argument additionalStyle/additionalScript causes improper authorization. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Usememos Memos: version 0.22.0 only; version 0.22.1 only

Published 2026-04-20. Last modified 2026-06-17.