CVE-2026-27771 Scanner
CVE-2026-27771 Scanner - Unauthorized Admin Access vulnerability in Gitea
Short Info
Level
Single Scan
Single Scan
Can be used by
Asset Owner
Estimated Time
10 seconds
Time Interval
23 days 15 hours
Scan only one
Domain, Subdomain, IPv4
Toolbox
Gitea is widely utilized as a self-hosted Git service, commonly deployed by development teams and organizations aiming to manage their source code repositories securely and efficiently. It supports collaborative workflows, through features such as pull requests and code reviews, enabling software teams to work harmoniously on projects. The platform facilitates the hosting of private and public repositories, providing fine-grained control over access permissions. Due to its open-source nature and versatility, Gitea can be customized and integrated with other tools and services to suit specific project needs. This platform is favored for environments requiring robust version control and collaboration features without relying on SaaS solutions. The ease of deployment makes it accessible for small teams as well as larger enterprise environments.
The Unauthorized Admin Access vulnerability in Gitea allows unauthenticated remote attackers to exploit an oversight in permission checks, granting them the ability to pull private container images. By manipulating the /v2/token endpoint, attackers can obtain unauthorized "ghost" tokens without proper scope restrictions, bypassing visibility checks intended to protect sensitive repositories. This misconfiguration enables users to list and access all container repositories, inclusive of any private image layers. As a high-impact vulnerability, it undermines the intended security measures provided by Gitea's container registry components. Systems not patched remain susceptible to unauthorized data leakage, representing a significant security risk.
The vulnerability mechanism targets misconfigurations within the Gitea container registry, exploiting an endpoint designed to facilitate access token generation. Vulnerable instances lack necessary access checks, allowing requests to generate tokens with escalated privileges inadvertently. Specific endpoints do not adequately validate ownership and visibility controls, making it possible for attackers to enumerate the catalog of available repositories. Effective exploitation involves leveraging token-based authentication to bypass access controls, accessing resources typically safeguarded against unauthorized entities. The improper design allows the unauthorized enumeration and download of otherwise protected assets, which poses a threat to organizational security integrity.
Successful exploitation of this vulnerability can result in malicious actors gaining unauthorized access to proprietary application source code, compromising embedded secrets such as API keys, and acquiring insight into internal infrastructure configurations. This exposes organizations to significant security threats, including intellectual property theft and unauthorized access to sensitive environments. Additionally, such breaches enable downstream attacks on associated systems, potentially undermining broader network security. Failure to address the vulnerability effectively could result in lasting reputational damage and various compliance and regulatory infractions.
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