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.

Published: Sep 4, 2025
Updated: Sep 6, 2025
CVE: CVE-2025-56761
GHSA: GHSA-cgrg-86m5-xm4w
Severity: Medium
Exploit:

CVSS v3:

Severity: Unknown
Score:
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CWEs:

CWE-79

OWASP TOP 10:

A7 - Cross-Site Scripting (XSS)

Affected Software
References

Software	From	Fixed in
github.com/usememos/memos	-	0.22.0.x

https://github.com/usememos/memos/blob/v0.24.0/server/router/api/v1/user_service.go#L147
https://github.com/usememos/memos/blob/v0.24.4/server/router/api/v1/resource_service.go#L48
https://www.sonarsource.com/blog/securing-go-applications-with-sonarqube-real-world-examples

Vulnerability Database

CVE-2025-56761

Deep Security Visibility Without the Complexity