CVE-2026-102576

Quay: quay: dom-based cross-site scripting via unvalidated redirect_url on signin page

Published Oct 5, 2026 CVSS 3.1 · 4.2 Medium EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Red Hat
Red Hat red Hat Quay 3
Vendors & Products Red Hat
Red Hat red Hat Quay 3
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Quay: quay: dom-based cross-site scripting via unvalidated redirect_url on signin page
First Time appeared Redhat
Redhat quay
Weaknesses CWE-79
CPEs cpe:/a:redhat:quay:3
Vendors & Products Redhat
Redhat quay
References
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 1, 2026, 5:13 AM
Reserved
Sep 29, 2026, 1:54 PM
Status
Awaiting Analysis
Published
Oct 5, 2026, 6:17 PM
Modified
Oct 6, 2026, 3:09 PM
Severity
Moderate
Public date
Sep 29, 2026, 1:54 PM