Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
crawl4ai versions before 0.8.8 allow writing files outside the allowed output directory via symlinks in the Docker API's /screenshot and /pdf output_path. The API is unauthenticated by default, so an attacker with network access could write arbitrary files. Upgrade to 0.8.8, or set CRAWL4AI_API_TOKEN to require authentication.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 9.2 | Critical | 4.0 | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | CNA (VulnCheck) |
- CISA KEV Not listed.
- EPSS 0.0091, the 60th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:42 UTC First seen by agentprime
- 31 Oct 2026, 14:42 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-7cx2-g3h9-382p
- OSV: GHSA-7cx2-g3h9-382p
- github.com/unclecode/crawl4ai/security/advisories/GHSA-7cx2-g3h9-382p
- github.com/unclecode/crawl4ai/issues/1
- github.com/unclecode/crawl4ai/issues/2
- github.com/unclecode/crawl4ai/pull/3
- github.com/pypa/advisory-database/tree/main/vulns/crawl4ai/PYSEC-2026-228.yaml
- github.com/unclecode/crawl4ai
- www.vulncheck.com/advisories/crawl4ai-arbitrary-file-write-via-output-path-symlink-and-toctou