CVE-2026-82286: Builderio Gpt-Crawler

High severity, CVSS 8.6. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Builderio Gpt-Crawler: up to and including 1.5.1

Published 2026-08-28. Last modified 2026-09-23.