Quay OAuth validator leaks client_id & client_secret in URL query
CVE-2026-10078 Published on May 29, 2026
Quay/config-tool: quay/config-tool: gitlab oauth client_secret exposed in url querystring
A flaw was found in the Quay config-tool's GitLab OAuth validator. This vulnerability causes sensitive credentials, specifically client_id and client_secret, to be transmitted as plaintext in URL query parameters during POST requests to the GitLab endpoint. This insecure transmission can lead to the disclosure of these credentials in various system logs, such as server access logs, reverse proxy logs, and other monitoring systems. An attacker with access to these logs could potentially obtain these credentials, leading to unauthorized information disclosure.
Vulnerability Analysis
CVE-2026-10078 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Timeline
Reported to Red Hat.
Made public.
Weakness Type
Use of GET Request Method With Sensitive Query Strings
The web application uses the HTTP GET method to process a request and includes sensitive information in the query string of that requests. The query string can be saved in the browser's history, passed through Referers to other web sites, stored in web logs, or otherwise recorded in other sources. If the query string contains sensitive information such as session identifiers, then attackers can use this information to launch further attacks.
Products Associated with CVE-2026-10078
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