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CVE-2026-109238— Crawl4AI 0.7.0 before 0.9.4 SSRF via link_preview_config URL Seeder

Quick assessment

Affected
unclecode crawl4ai
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Crawl4AI 0.7.0 至 0.9.4 版本（不含 0.9.4）中存在一个服务器端请求伪造（SSRF）漏洞。攻击者可以通过在 请求中启用 ，使 API 客户端能够访问内部地址。具体而言，攻击者可以提供一个可控的页面，并将 和 设置为特定值，从而触发 AsyncUrlSeeder 去获取内部网络、私有网络以及云元数据服务的链接，并返回这些链接解析后的头部数据。

CVSS 8.6 · High EPSS 0.30% · P21

Affected Version Matrix 2

VendorProduct Version RangeStatus
unclecode crawl4ai 0.7.0< 0.9.4 affected
0.9.4 unaffected
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I. Basic Information for CVE-2026-109238

Vulnerability Information
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Vulnerability Title
Crawl4AI 0.7.0 before 0.9.4 SSRF via link_preview_config URL Seeder
Source: CVE Program / CVE List V5
Vulnerability Description
Crawl4AI 0.7.0 before 0.9.4 contains a server-side request forgery vulnerability that allows API clients to reach internal addresses by enabling link_preview_config on /crawl requests. Attackers can supply a controlled page with include_external and include_patterns set, causing AsyncUrlSeeder to fetch internal, private, and cloud-metadata links and return their parsed head data.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
unclecode crawl4ai 0.7.0 ~ 0.9.4 -

II. Public POCs for CVE-2026-109238

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III. Intelligence Information for CVE-2026-109238

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Vendor Advisories for CVE-2026-109238 (2)

Same Patch Batch · unclecode · 2026-10-12 · 3 CVEs total

CVE-2026-109237 8.1 HIGH Crawl4AI 0.9.0 before 0.9.4 Untrusted Config Gate Bypass Leaks Environment Variables
CVE-2026-109239 5.3 MEDIUM Crawl4AI before 0.9.4 Blind SSRF via RobotsParser.can_fetch robots.txt Fetch

IV. Related Vulnerabilities

Same product: crawl4ai
Same vendor: unclecode
Same weakness: CWE-918

V. Comments for CVE-2026-109238

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