CVE-2026-58437 in Gitea
Summary
by MITRE • 08/13/2026
Repository Visibility Manipulation via Git Push Options
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Analysis
by VulDB Data Team • 08/13/2026
Git repositories are fundamental to modern software development workflows, providing version control and collaboration capabilities that underpin countless applications and systems. The vulnerability described here involves manipulation of repository visibility settings through git push options, which represents a critical security flaw in how git handles remote repository interactions. This issue occurs when attackers can exploit the push options functionality to alter repository visibility configurations during push operations.
The technical implementation of this vulnerability stems from improper validation of push options in git server implementations. When developers use git push commands with custom push options, these options are often processed without adequate sanitization or authorization checks. The flaw allows malicious actors to inject commands or parameters that modify repository visibility settings, potentially converting private repositories into public ones or vice versa. This occurs because the underlying git server does not properly validate whether the user has sufficient privileges to make such visibility changes, nor does it adequately sanitize the input received through push options.
The operational impact of this vulnerability extends beyond simple visibility manipulation and can lead to severe consequences for organizations relying on git-based workflows. Attackers who successfully exploit this flaw can gain unauthorized access to sensitive code repositories, potentially exposing proprietary source code, configuration files, and other confidential information. The vulnerability becomes particularly dangerous when combined with other attack vectors, as it allows threat actors to maintain persistent access to private repositories while making them publicly accessible to evade detection. This type of manipulation directly violates the principle of least privilege and can result in significant intellectual property theft or compliance violations.
Mitigation strategies for this vulnerability must address both server-side and client-side configurations to prevent unauthorized visibility changes. Git server implementations should enforce strict validation of push options, ensuring that any visibility-related parameters are properly authenticated and authorized before processing. Organizations should implement mandatory access controls that require explicit permissions for repository visibility modifications, regardless of how the change is initiated. The implementation should follow security standards such as those outlined in cwe 284 which addresses improper access control, and align with attack techniques described in the attack pattern taxonomy under privilege escalation and information exposure categories. Regular auditing of push operations and monitoring for unusual visibility changes can help detect exploitation attempts. Additionally, developers should be trained to avoid using untrusted push options and organizations should consider implementing automated security scanning tools that can identify potential manipulation attempts in real-time.
This vulnerability demonstrates the importance of secure configuration management in distributed version control systems and highlights how seemingly minor implementation flaws can have significant security implications. The attack surface expands when considering that many organizations use git integrations with CI/CD pipelines, where push options are frequently used for automation purposes, making this a critical concern for DevOps environments. Proper input validation and access control enforcement remain essential practices to prevent such manipulations from compromising repository integrity and confidentiality.