CVE-2026-44246

The record

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.

Affected packages

Related vulnerabilities

• CVE-2026-114577 A vulnerability was found in oretnom23 php-travel-agency-system. CWE-74
• CVE-2026-114575 A flaw has been found in TOTOLINK A950RG 4.1.2cu.5268_B20221104. CWE-74
• CVE-2026-112150 A security flaw has been discovered in vraj404 Criminal-Management-System up to… CWE-74
• CVE-2026-112141 A vulnerability was determined in satya-vinay Events-Management-System up to… CWE-74
• CVE-2026-112100 A vulnerability was determined in DeepPavlov up to 1.7.0. CWE-74
• CVE-2026-112087 A weakness has been identified in itsourcecode Online Cake Ordering System 1.0. CWE-74
• CVE-2026-111991 A security vulnerability has been detected in WongKinYiu yolov9 0.1. CWE-74
• CVE-2026-111986 A vulnerability was determined in AUTOMATIC1111 stable-diffusion-webui up to 1.10.1. CWE-74