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CVE-2026-119121— Crawl4AI 0.9.0 before 0.9.5 JavaScript Injection via css_selector and wait_for

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.

Crawl4AI 在 0.9.0 至 0.9.5（不含 0.9.5）版本中存在 JavaScript 注入漏洞。该漏洞位于 Docker API 服务器中，允许已认证的 API 客户端通过白名单中的 和 字段，在爬虫页面中执行任意 JavaScript 代码。攻击者可通过在 中注入引号，或在 中提供 条件，绕过 块的防护，从而篡改页面状态并修改返回的爬虫内容。

CVSS 4.3 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
unclecode crawl4ai 0.9.0< 0.9.5 affected
0.9.5 unaffected
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I. Basic Information for CVE-2026-119121

Vulnerability Information
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Vulnerability Title
Crawl4AI 0.9.0 before 0.9.5 JavaScript Injection via css_selector and wait_for
Source: CVE Program / CVE List V5
Vulnerability Description
Crawl4AI from 0.9.0 before 0.9.5 contains a JavaScript injection vulnerability in the Docker API server that allows authenticated API clients to run arbitrary JavaScript in the crawl page via allowlisted css_selector and wait_for fields. Attackers can inject quotes into css_selector or supply js: conditions in wait_for, bypassing the js_code block to alter page state and returned crawl content.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
unclecode crawl4ai 0.9.0 ~ 0.9.5 -

II. Public POCs for CVE-2026-119121

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III. Intelligence Information for CVE-2026-119121

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Other References for CVE-2026-119121 (2)

Same Patch Batch · unclecode · 2026-10-29 · 5 CVEs total

CVE-2026-119119 7.5 HIGH Crawl4AI before 0.9.5 Denial of Service via Unbounded CrawlerRunConfig Delay Fields
CVE-2026-119120 7.5 HIGH Crawl4AI 0.9.0 before 0.9.5 Untrusted Model Loading via CosineStrategy model_name
CVE-2026-119118 6.5 MEDIUM Crawl4AI before 0.9.5 Improper Certificate Validation via Hard-coded Chromium Flags
CVE-2026-119122 5.3 MEDIUM Crawl4AI before 0.9.5 Blind SSRF via CacheValidator Freshness Check

IV. Related Vulnerabilities

Same product: crawl4ai
Same vendor: unclecode
Same weakness: CWE-95