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CVE-2026-82286— gpt-crawler Arbitrary File Write via outputFileName Parameter

Quick assessment

Affected
BuilderIO gpt-crawler
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.

gpt-crawler 在 1.5.1 及更早版本中，POST /crawl 端点对 参数缺乏有效验证，允许未经身份验证的攻击者向任意文件系统路径写入任意文件。攻击者可通过提供绝对路径或父目录片段（如 ），利用来自攻击者可控 URL 的内容，覆盖系统中已存在的文件。

CVSS 8.6 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
BuilderIO gpt-crawler ≤ 1.5.1 affected
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I. Basic Information for CVE-2026-82286

Vulnerability Information
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Vulnerability Title
gpt-crawler Arbitrary File Write via outputFileName Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
gpt-crawler through 1.5.1 fails to validate the outputFileName parameter in the POST /crawl endpoint, allowing unauthenticated attackers to write arbitrary files to any filesystem path. Attackers can supply absolute paths or parent-directory segments to overwrite existing files with content sourced from attacker-controlled URLs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
BuilderIO gpt-crawler 0 ~ 1.5.1 -

II. Public POCs for CVE-2026-82286

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-82286

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Patches & Fixes for CVE-2026-82286 (1)

Vendor Advisories for CVE-2026-82286 (1)

Proof of Concept for CVE-2026-82286 (2)

Other References for CVE-2026-82286 (1)

IV. Related Vulnerabilities

Same vendor: BuilderIO
Same weakness: CWE-22

V. Comments for CVE-2026-82286

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