Report: CVE-2026-44246 - nnU-Net: Agentic workflow injection in `.github/workflows/issue-triage.yml` of `...

Report: CVE-2026-44246 - nnU-Net: Agentic workflow injection in `.github/workflows/issue-triage.yml` of `...

CVE ID :CVE-2026-44246 Published : May 12, 2026, 8:41 p.m. | 35 minutes ago Description :nnU-Net is a semantic segmentation framework that automatically adapts its pipeline to a dataset. Prior to 2.4.1, the nnU-Net Issue Triage workflow in .github/workflows/issue-triage.yml is vulnerable to Agentic Workflow Injection. The workflow sets allowed_non_write_users: ${{ github.event.issue.user.login }}, which means any logged-in GitHub user who opens an issue can reach this agentic workflow with attacker-controlled content. Untrusted issue title and body content are embedded directly into the prompt of anthropics/claude-code-action, and the workflow then runs a command-capable Claude agent with permission to comment on and relabel the current issue via gh. Because this workflow is triggered automatically on issues.opened, an external attacker can submit a crafted issue that steers the agent beyond its intended issue-triage purpose and influences authenticated issue actions. This vulnerability is fixed in 2.4.1. Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...

CVE Details

Published
May 12, 2026
Affected Product: github