Is this vulnerability remotely exploitable?

Yes. An attacker can exploit it remotely by sending a malicious `/auth/login` link with a crafted callbackUrl and convincing a victim to open it in their browser.

Does exploitation require authentication or special privileges?

Exploitation is most impactful when the victim is authenticated, because injected JavaScript then runs with access to their active session. The attacker themselves does not need an account; they only need the ability to deliver a link to the victim.

What is the safest general fix pattern?

The safest pattern is to centralize handling of redirect/callback parameters and enforce a strict allowlist of valid targets (e.g., predefined path names within the app), rejecting or normalizing anything else before passing it to router or redirect functions.

Severity:

HIGH RISK

(8.8)

DOM-based Open Redirect and XSS (CWE-601) in Homarr Login Callback Handling

CVE-2026-33510

Published:

Apr 6, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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May 10, 2026

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HIGH RISK

HIGH

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Remote Code Execution by Authenticated Users

May 10, 2026

Vulnerability Type

Category:

Cross-Site Scripting (DOM-based)

CWE:

CWE-87;CWE-601

Impact:

Client-side Code Execution and Open Redirect

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Cross-Site Scripting (DOM-based)

CWE:

CWE-87;CWE-601

Impact:

Client-side Code Execution and Open Redirect

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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DOM-based Open Redirect and XSS (CWE-601) in Homarr Login Callback Handling

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.8)

PHP Code Injection via File Upload (CWE-94) in Aero CMS Admin Post Creation

HIGH RISK

HIGH

(8.8)

Code Injection (CWE-94) via Module Parameters in Evolution CMS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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