What is CVE-2026-6634?

CVE-2026-6634 is a medium-severity vulnerability in Usememos Memos, classified under Incorrect Privilege Assignment. CVSS score: 6.3/10. Published 2026-04-20.

How severe is CVE-2026-6634?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Auth bypass in Usememos Memos

CVE-2026-6634

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…

EPSS: 0.000 (2.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Usememos Memos — versions 0.22.0, 0.22.1

Weakness classification (CWE)

References

VDB-358268 | usememos UpdateInstanceSetting App.tsx memos_access_token improper authorization (technical-description, vdb-entry)
VDB-358268 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
Submit #793432 | Usememos Memos 0.22.1 Cross Site Scripting (third-party-advisory)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-6634?: CVE-2026-6634 is a medium-severity vulnerability in Usememos Memos, classified under Incorrect Privilege Assignment. CVSS score: 6.3/10. Published 2026-04-20.
How severe is CVE-2026-6634?: Medium severity. CVSS v3 base score is 6.3 out of 10.