Question 1

What is this vulnerability? (Essence + Consequences)

Accepted Answer

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

Question 2

Root Cause? (CWE/Flaw)

Accepted Answer

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

Question 3

Who is affected? (Versions/Components)

Accepted Answer

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

Question 4

What can hackers do? (Privileges/Data)

Accepted Answer

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

Question 5

Is exploitation threshold high? (Auth/Config)

Accepted Answer

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

Question 6

Is there a public Exp? (PoC/Wild Exploitation)

Accepted Answer

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

Question 7

How to self-check? (Features/Scanning)

Accepted Answer

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

Question 8

Is it fixed officially? (Patch/Mitigation)

Accepted Answer

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

Question 9

What if no patch? (Workaround)

Accepted Answer

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

Question 10

Is it urgent? (Priority Suggestion)

Accepted Answer

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

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CVE-2026-31852 — AI Deep Analysis Summary

Q1What is this vulnerability? (Essence + Consequences)

Q2Root Cause? (CWE/Flaw)

Q3Who is affected? (Versions/Components)

Q4What can hackers do? (Privileges/Data)

Q5Is exploitation threshold high? (Auth/Config)

Q6Is there a public Exp? (PoC/Wild Exploitation)

Q7How to self-check? (Features/Scanning)

Q8Is it fixed officially? (Patch/Mitigation)

Q9What if no patch? (Workaround)

Q10Is it urgent? (Priority Suggestion)

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