CVE-2026-102295 Quay: quay: dom-based cross-site scripting via oauth local callback format=json parameter
A remote attacker can execute arbitrary JavaScript in a logged-in user's browser via a crafted OAuth callback link, potentially compromising sessions and accessing sensitive registry data.
- 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-2026-102295?
CVE-2026-102295 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 cross-site scripting (XSS) vulnerability in the OAuth callback handler allows a remote attacker to execute arbitrary JavaScript code within a user's browser session. By tricking a logged-in user into visiting a specially crafted link, an attacker can exploit improper input sanitization to run client-side scripts in the application context. Successful exploitation could allow the attacker to compromise the user's session, access sensitive registry information, or perform unauthorized actions on their behalf.
Weakness: CWE-79
Which versions are affected by CVE-2026-102295?
How do I fix CVE-2026-102295?
No fix has been published for CVE-2026-102295 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-2026-102295 being exploited?
There is no known exploitation of CVE-2026-102295 in the wild and no public exploit code.
Sources
Also known as GHSA-fjvc-v8v8-pmj9.