CVE-2026-31852 — AI Deep Analysis Summary

🚨 **Essence**: Jellyfin's GitHub Actions workflow has **excessive permissions**. <br>💥 **Consequences**: This flaw can lead to **Arbitrary Code Execution** and complete **Repository Takeover**.…

🛡️ **Root Cause**: **CWE-269** (Improper Control of a Resource Through its Lifetime).…

👥 **Affected**: **Jellyfin** (specifically the `jellyfin-ios` repository). <br>📦 **Component**: The GitHub Actions workflow file `code-quality.yml`.…

💀 **Attacker Actions**: <br>1. **Execute Arbitrary Code**: Run malicious scripts within the CI/CD pipeline. <br>2. **Takeover Repository**: Gain control over the source code repository. <br>3.…

📉 **Threshold**: **LOW**. <br>🔑 **Requirements**: <br>- **Auth**: None required (PR:N). <br>- **UI**: None required (UI:N). <br>- **Access**: Network (AV:N).…

🧪 **Public Exploit**: **No**. <br>📝 **Status**: The `pocs` field is empty.…

🔍 **Self-Check**: <br>1. Inspect your GitHub Actions workflows (especially `code-quality.yml`). <br>2. Check for `permissions: write-all` or excessive `contents: write` scopes. <br>3.…

✅ **Fixed**: **Yes**. <br>🔗 **Patch**: A fix was committed to `jellyfin/jellyfin-ios` (Commit: `109217e75f38394b2f6e46e25dfe5a721203d3c8`). <br>📅 **Published**: 2026-03-11. Users should update to the patched version.

🚧 **No Patch Workaround**: <br>1. **Restrict Permissions**: Manually edit `code-quality.yml` to use minimal permissions. <br>2. **Disable Workflows**: Temporarily disable the affected GitHub Action if not needed. <br>3.…

🔥 **Urgency**: **HIGH**. <br>⚡ **Priority**: Immediate action required. With CVSS **9.8** (Critical), the risk of repository takeover is severe.…