Path Traversal in Builderio Gpt-Crawler
CVE-2026-82286
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L.
EPSS exploit prediction
EPSS: 0.005 (42.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/BuilderIO/gpt-crawler/issues/418 (issue-tracking)
- github.com/BuilderIO/gpt-crawler (product)
- github.com/BuilderIO/gpt-crawler/blob/d2245d66a5ad60bf227a55c849135394cbecc9b5/… (technical-description)
- github.com/BuilderIO/gpt-crawler/blob/d2245d66a5ad60bf227a55c849135394cbecc9b5/… (technical-description)
- www.vulncheck.com/advisories/gpt-crawler-arbitrary-file-write-via-outputfilenam… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-82286?
- CVE-2026-82286 is a high-severity vulnerability in Builderio Gpt-Crawler, classified under Path Traversal. CVSS score: 8.6/10. Published 2026-08-28.
- How severe is CVE-2026-82286?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2026-82286 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.