CVE-2026-82286
gpt-crawler Arbitrary File Write via outputFileName Parameter
- State
- Published
- Severity
- 8.8 High
- Published
- Aug 28, 2026
- Updated
- Sep 24, 2026
- Reserved
- Aug 28, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.8 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.6 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L | VulnCheck |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
gpt-crawlerBuilderIO |
|
References
- GitHub Issue #418issue-tracking
- https://github.com/BuilderIO/gpt-crawlerproduct
- Vulnerable code: core.tstechnical-description
- Vulnerable code: config.tstechnical-description
- VulnCheck Advisory: gpt-crawler Arbitrary File Write via outputFileName Parameterthird-party-advisory
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