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CVE-2026-26216 โ€” AI Deep Analysis Summary

CVSS 10.0 ยท Critical

Q1What is this vulnerability? (Essence + Consequences)

๐Ÿšจ **Essence**: Crawl4AI < 0.8.0 suffers from **Code Injection**. ๐Ÿ“‰ **Consequences**: Attackers execute arbitrary Python code via the `/crawl` endpoint, leading to **full server compromise** and remote command execution.โ€ฆ

Q2Root Cause? (CWE/Flaw)

๐Ÿ›ก๏ธ **CWE-94**: Improper Control of Generation of Code ('Code Injection'). ๐Ÿ› **Flaw**: The Docker API accepts a `hooks` parameter containing Python code and executes it directly using `exec()`.โ€ฆ

Q3Who is affected? (Versions/Components)

๐Ÿ‘ฅ **Vendor**: UncleCode. ๐Ÿ“ฆ **Product**: Crawl4AI (LLM-friendly web crawler). ๐Ÿ“… **Affected Versions**: All versions **prior to 0.8.0**. ๐Ÿšซ **Fixed in**: 0.8.0.

Q4What can hackers do? (Privileges/Data)

๐Ÿ”“ **Privileges**: Unauthenticated Remote Code Execution (RCE). ๐Ÿ—‘๏ธ **Data**: Full control over the server. ๐ŸŒ Attackers can run **any system command**, access sensitive data, and pivot to other internal systems.โ€ฆ

Q5Is exploitation threshold high? (Auth/Config)

๐Ÿ“‰ **Threshold**: VERY LOW. ๐Ÿšซ **Auth**: None required (Unauthenticated). โš™๏ธ **Config**: Direct access to the Docker API `/crawl` endpoint. ๐ŸŽฏ **Complexity**: Low (CVSS: L). Just send a malicious payload.

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

๐Ÿ“ข **Public Exp?**: Yes, detailed in the Vendor Advisory (GHSA-5882-5rx9-xgxp) and Third-Party Advisory. ๐ŸŒ **Wild Exploitation**: High risk due to low barrier to entry.โ€ฆ

Q7How to self-check? (Features/Scanning)

๐Ÿ” **Self-Check**: Scan for Crawl4AI services exposing the `/crawl` endpoint. ๐Ÿงช **Test**: Send a request with a `hooks` parameter containing harmless Python code (e.g., `print('test')`).โ€ฆ

Q8Is it fixed officially? (Patch/Mitigation)

โœ… **Fixed**: Yes. ๐Ÿ› ๏ธ **Patch**: Upgrade to **Crawl4AI version 0.8.0** or later. ๐Ÿ“– **Reference**: See the GitHub Security Advisory for official mitigation steps. ๐Ÿ”„ Update immediately.

Q9What if no patch? (Workaround)

๐Ÿšง **Workaround**: If upgrading is impossible, **block external access** to the `/crawl` endpoint via firewall rules. ๐Ÿ›‘ Disable the `hooks` functionality if configurable. ๐Ÿšซ Restrict network access to trusted IPs only.โ€ฆ

Q10Is it urgent? (Priority Suggestion)

๐Ÿ”ฅ **Urgency**: CRITICAL. ๐Ÿšจ **Priority**: P1. ๐Ÿ“‰ **CVSS**: 9.8 (Critical). โณ **Action**: Patch immediately. Unauthenticated RCE is a top-tier threat. ๐Ÿƒโ€โ™‚๏ธ Do not delay.