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CVE-2026-6634

usememos UpdateInstanceSetting App.tsx memos_access_token improper authorization

Published: Apr 20, 2026Updated: Apr 29, 2026 Sources: CVE List NVDCWE-266
NVD MITRE
6.3CVSSMEDIUM
EPSS Score
0.3%
Top 83.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-266CWE-285

Affected Products

memosusememos
On-premWeb App
Enterprise Software / itsm-monitoring
usememososs-projectEnterprise Softwareaka memos, usememos/memos

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://github.com/Dave-gilmore-aus/security-advisories/blob/main/usememos-security-advisory
github.com
https://vuldb.com/submit/793432
vuldb.com
https://vuldb.com/vuln/358268
vuldb.com
and 1 more references View all →

Timeline

Published
Apr 20, 2026
Last Updated
Apr 29, 2026

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