CVE-2026-102576
Received Received - Intake

Cross-Site Scripting (XSS) in Quay Container Registry

Publication date: 2026-10-05

Last updated on: 2026-10-05

Assigner: redhat-SADP

Description
A flaw was found in Quay. A remote attacker could trick a user into logging in through a crafted link, resulting in cross-site scripting (XSS). Because the application does not validate the redirect destination before navigating, this flaw allows the execution of arbitrary script in the context of the victim's authenticated browser session. Successful exploitation requires the target Quay deployment to use direct database authentication and the victim to complete login through the malicious URL.

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Meta Information

Published
2026-10-05
Last Modified
2026-10-05
Generated
2026-10-05
AI Q&A
2026-10-05
EPSS Evaluated
N/A
NVD
CVE-2026-102576
EUVD
EUVD-2026-92519

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
red_hat quay *
redhat quay *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a DOM-based cross-site scripting (XSS) vulnerability in Quay's sign-in page. A remote attacker can craft a malicious login URL that executes arbitrary JavaScript in the victim's authenticated browser session after they log in. The flaw occurs because Quay does not validate the redirect destination URL before navigating, allowing script execution in the user's session.

Detection Guidance

To detect this DOM-based XSS vulnerability in Quay, inspect network traffic for login requests containing a redirect_url parameter with suspicious values like 'javascript:' URIs. Check browser console logs for unexpected script execution during authentication. No specific commands are provided in the resources, but monitoring HTTP requests to Quay's sign-in endpoint for unusual redirect parameters may help.

Impact Analysis

An attacker could steal session cookies, perform actions on your behalf, or access sensitive data within your authenticated Quay session. This could lead to unauthorized access to repositories, private data exposure, or further compromise of your account or system.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection principles or HIPAA's security requirements for protected health information. Organizations may face compliance violations, legal penalties, or reputational damage if exploited.

Mitigation Strategies

Upgrade to a supported Quay version with a fix. If upgrading is not immediately possible, disable direct database authentication as a workaround. Avoid using Quay's sign-in page until patched, and educate users not to follow untrusted login links. Red Hat notes mitigations may not meet security criteria for stability.

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