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CVE-2026-6022 β€” AI Deep Analysis Summary

CVSS 7.5 Β· High

Q1What is this vulnerability? (Essence + Consequences)

- **CVE-2026-6022**: Resource mgmt flaw in **Progress Telerik UI for AJAX** 🚨 - Affects **RadAsyncUpload** component. - Missing size enforcement during chunk reassembly. - ⚠️ Upload > max config size possible.…
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Q2Root Cause? (CWE/Flaw)

- **Root Cause**: Missing cumulative size check in upload process. - Related to **CWE-400**: Uncontrolled Resource Consumption. - Flaw: No enforced limit while merging chunks 🧩.

Q3Who is affected? (Versions/Components)

- **Affected**: Progress Telerik UI for AJAX < **2026.1.421**. - Component: **RadAsyncUpload**. - 🎯 Web apps using vulnerable version.

Q4What can hackers do? (Privileges/Data)

- **Hackers**: No need for auth πŸ›‘. - Can force large uploads β†’ fill disk. - πŸ“‰ Impact: **Availability** only (C:N / I:N / A:H). - No direct data access or privilege gain.

Q5Is exploitation threshold high? (Auth/Config)

- **Exploitation Threshold**: VERY LOW βœ…. - πŸ”“ **No authentication** needed (PR:N). - 🌐 Network accessible (AV:N). - Simple config: just trigger upload.

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

- **Public Exploit**: ❌ None found. - **PoC**: Not available (`"pocs": []`). - πŸ•΅οΈ No wild exploitation confirmed yet.

Q7How to self-check? (Features/Scanning)

- **Self-Check**: - Identify if app uses **RadAsyncUpload**. - Check Telerik UI version < 2026.1.421 πŸ”. - Review upload size limits & chunk handling logic. - Monitor disk usage spikes after uploads πŸ’‘.

Q8Is it fixed officially? (Patch/Mitigation)

- **Official Fix**: βœ… Yes. - Patched in version **2026.1.421**.…
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Q9What if no patch? (Workaround)

- **If No Patch**: - Enforce strict file size limits at server side 🚨. - Disable or replace **RadAsyncUpload** if unused. - Add custom checks during chunk reassembly πŸ’‘.…
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Q10Is it urgent? (Priority Suggestion)

- **Urgency**: πŸ”₯ HIGH PRIORITY. - Easy to exploit (no auth). - Can cause full disk β†’ service outage. - πŸ“’ Patch ASAP or apply mitigations!

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Vulnerability detail Full AI analysis (login) Progress Software CWE-400