CVE-2026-102576 Quay: quay: dom-based cross-site scripting via unvalidated redirect_url on signin page
Attackers can execute arbitrary scripts in victim sessions via unvalidated redirects on the Quay sign-in page, requiring direct database authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-102576?
CVE-2026-102576 is a medium-severity cross-site scripting vulnerability in Red Hat Quay 3, published on 5 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-102576?
How do I fix CVE-2026-102576?
No fix has been published for CVE-2026-102576 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-102576 being exploited?
There is no known exploitation of CVE-2026-102576 in the wild and no public exploit code.
Sources
Also known as GHSA-f2m3-wc4v-9hhm.