CVE-2026-6634

MEDIUM

usememos UpdateInstanceSetting App.tsx memos_access_token improper authorization

Title source: cna
STIX 2.1

Description

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.

References (4)

Core 4
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-358268 | usememos UpdateInstanceSetting App.tsx memos_access_token improper authorization
https://vuldb.com/vuln/358268
Signature, Permissions Required signature permissions-required
VDB-358268 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/358268/cti
Third Party Advisory third-party-advisory
Submit #793432 | Usememos Memos 0.22.1 Cross Site Scripting
https://vuldb.com/submit/793432

Scores

CVSS v3 6.3
EPSS 0.0025
EPSS Percentile 16.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-266 CWE-285
Status published
Products (3)
usememos/memos 0Go
usememos/memos 0.22.0
usememos/memos 0.22.1
Published Apr 20, 2026
Tracked Since Apr 20, 2026