CVE-2025-56761

Memos 0.22 is vulnerable to Stored Cross site scripting (XSS) vulnerabilities by the upload attachment and user avatar features. Memos does not verify the content type of the uploaded data and serve it back as is. An authenticated attacker can use this to elevate their privileges when the stored XSS is viewed by an admin.

• CWE-79

• https://github.com/usememos/memos/blob/v0.24.0/server/router/api/v1/user_service.go#L147Product
• https://github.com/usememos/memos/blob/v0.24.4/server/router/api/v1/resource_service.go#L48Product
• https://www.sonarsource.com/blog/securing-go-applications-with-sonarqube-real-world-examples/Exploit, Patch, Third Party Advisory

Published

Sep 3, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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