What’s Vulnerable › Vulnerabilities

CVE-2026-102295: Quay: quay: dom-based cross-site scripting via oauth local callback format=json parameter

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-05 · updated 2026-11-01
• Weakness: CWE-79

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.

Affected products

• Red Hat Quay 3: all versions

References

• https://access.redhat.com/security/cve/CVE-2026-102295
• https://bugzilla.redhat.com/show_bug.cgi?id=2542699

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