What’s Vulnerable › Vulnerabilities

CVE-2024-49379: Remote Code Execution (RCE) via Cross-Site Scripting (XSS) in Umbrel

• Severity: medium (CVSS 5.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-13 · updated 2026-06-17
• Weakness: CWE-79

Description

Umbrel is a home server OS for self-hosting. The login functionality of Umbrel before version 1.2.2 contains a reflected cross-site scripting (XSS) vulnerability in use-auth.tsx. An attacker can specify a malicious redirect query parameter to trigger the vulnerability. If a JavaScript URL is passed to the redirect parameter the attacker provided JavaScript will be executed after the user entered their password and clicked on login. This vulnerability is fixed in 1.2.2.

Affected products

• Umbrel: before 1.2.2 — fixed in 1.2.2

How to fix

Upgrade to a fixed version: Umbrel 1.2.2. Check the vendor advisory for mitigations.

References

• https://github.com/getumbrel/umbrel/commit/b83e3542650880bf1439419d00bf82285a7d2b22
• https://github.com/getumbrel/umbrel/releases/tag/1.2.2
• https://securitylab.github.com/advisories/GHSL-2024-164_Umbrel/

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