PT-2026-33756 · Usememos · Memos

Davidgilmore · Published 2026-04-20 · Updated 2026-04-20 · CVE-2026-6634

Mitre

CVSS v3.1

6.3

Medium

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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.

Exploit

Fix

Improper Authorization

Incorrect Privilege Assignment

Weakness Enumeration

CWE-285

CWE-266

Related Identifiers

CVE-2026-6634

Affected Products

Memos

References · 5

• 🔥 https://github.com/Dave-gilmore-aus/security-advisories/blob/main/usememos-security-advisory · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-6634 · Security Note
• https://vuldb.com/vuln/358268 · Note
• https://vuldb.com/vuln/358268/cti · Note
• https://vuldb.com/submit/793432 · Note