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CVE-2026-56261— Crawl4AI - Server-Side Request Forgery via Webhook URLs

Quick assessment

Affected
Crawl4AI Crawl4AI
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

UncleCode Crawl4AI是新加坡UncleCode个人开发者的一款AI驱动的爬虫软件。 UncleCode Crawl4AI 0.8.7之前版本存在服务端请求伪造漏洞，该漏洞源于Docker API服务器的/crawl/job和/llm/job端点接受webhook URL时未进行目标验证，导致服务端请求伪造（SSRF），攻击者可提供指向私有或内部IP范围、Docker网络或云元数据端点的webhook URL，使服务器向内部服务发起请求并可能暴露云元数据。

CVSS 8.6 · High EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 2

VendorProduct Version RangeStatus
Crawl4AI Crawl4AI < 0.8.7 affected
0.8.7 unaffected
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I. Basic Information for CVE-2026-56261

Vulnerability Information
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Vulnerability Title
Crawl4AI - Server-Side Request Forgery via Webhook URLs
Source: CVE Program / CVE List V5
Vulnerability Description
Crawl4AI before 0.8.7 contains a server-side request forgery (SSRF) vulnerability in the Docker API server's /crawl/job and /llm/job endpoints, which accept webhook URLs without destination validation. An attacker can supply webhook URLs pointing to private or internal IP ranges, Docker networks, or cloud metadata endpoints (e.g. 169.254.169.254), causing the server to make requests to internal services and potentially expose cloud metadata.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
UncleCode Crawl4AI 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
UncleCode Crawl4AI是新加坡UncleCode个人开发者的一款AI驱动的爬虫软件。 UncleCode Crawl4AI 0.8.7之前版本存在服务端请求伪造漏洞，该漏洞源于Docker API服务器的/crawl/job和/llm/job端点接受webhook URL时未进行目标验证，导致服务端请求伪造（SSRF），攻击者可提供指向私有或内部IP范围、Docker网络或云元数据端点的webhook URL，使服务器向内部服务发起请求并可能暴露云元数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Crawl4AI Crawl4AI 0 ~ 0.8.7 -

II. Public POCs for CVE-2026-56261

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 7767 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-56261

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Vendor Advisories for CVE-2026-56261 (2)

Other References for CVE-2026-56261 (1)

IV. Related Vulnerabilities

Same product: Crawl4AI
Same vendor: Crawl4AI
Same weakness: CWE-918

V. Comments for CVE-2026-56261

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