The gist: A vulnerability in GitHub’s Agentic Workflows allows unauthenticated attackers to retrieve private repository data via issues in the public domain.
A vulnerability in GitHub’s agent-based workflows enables access to data from private repositories of the same organization via an issue in a public repository. The attacker does not require authentication to gain access.
The vulnerability works by creating a GitHub issue in a public repository of an organization. An unauthenticated attacker can craft this issue in such a way that the platform’s agent-based workflows query and disclose data from private repositories of the same organization.
For security professionals, this represents a significant risk: even public repositories can become a vehicle for data leakage from sensitive, private environments. This undermines the traditional trust in isolation between public and private project areas.
The threat addresses a combined vulnerability in automation: GitHub workflows with agent functionality follow links or commands from issue text without first checking whether the sender is authorized to access private resources. Organizations should review which workflows are executed with agent functionality and whether they can access sensitive data without performing additional authorization checks.
Source: www.darkreading.com · Published July 7, 2026
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