Kritik CVSS 10
CVE-2026-53753: Crawl4ai: kod enjeksiyonu
Açıklama (NVD)
Crawl4AI is an open-source LLM friendly web crawler & scraper. Prior to 0.8.7, the _safe_eval_expression() function in the computed fields feature uses an AST validator that only blocks attributes starting with underscore. Python generator and frame object attributes (gi_frame, f_back, f_builtins) do NOT start with underscore, enabling a complete sandbox escape to achieve arbitrary code execution. The attack requires no authentication (JWT disabled by default) and is triggered via POST /crawl with a crafted extraction schema. This vulnerability is fixed in 0.8.7.
Özet bilgiler
- Ürün
- Kidocode Crawl4ai
- CVSS v3.1
- 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS
- %2,90 (yüzdelik 87)
- CWE
- CWE-94
- Yama
- Geçici çözüm
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| kidocode-crawl4ai | — | — | 0.8.7 |