GHSA-wm69-2pc3-rmmf
### Summary The Docker API server applied its SSRF destination check (`validate_url_destination`) on the non-streaming `/crawl` path but not on the streaming path. `handle_stream_crawl_request` passed seed URLs straight to the crawler with no destination validation. A remote, unauthenticated client could call `POST /crawl/stream` (or `POST /crawl` with `crawler_config.stream=true`, which short-circuits to the same handler) with a URL pointing at an internal, private, or link-local address; the server fetched it and streamed the response body back. The Docker API is unauthenticated by default. ### Affected paths `POST /crawl/stream`, and `POST /crawl` with `crawler_config.stream=true` (both route to `handle_stream_crawl_request`, `deploy/docker/api.py`). ### Impact Unauthenticated read server-side request forgery: an attacker reads internal-only services and cloud-metadata endpoints (e.g. `http://169.254.169.254/` for IAM credentials), with the response body streamed back. This is the same class and severity as the project's prior "SSRF via Direct Crawl Endpoints" advisory; `/crawl/stream` is part of that endpoint family and was never covered by the destination check. ### Fix `handle_stream_crawl_request` now validates every seed URL's destination with the same global-routability check as `handle_crawl_request`, before any fetch. The SSRF regression test was hardened to assert per-handler coverage (including the streaming handler) rather than a bare occurrence count, which previously let this gap pass. ### Workarounds - Upgrade to the patched version (0.9.0). - Enable authentication and restrict who can reach the API (note: this does not constrain which URL the API fetches). - Restrict the container's outbound network access (egress firewall / no metadata route). ### Credits KOH Jun Sheng - reported the streaming-path SSRF with a runnable PoC and noted the count-based regression test that masked it, plus the shared root cause with redirect/deep-crawl link
Properties
- ghsa_id
- GHSA-wm69-2pc3-rmmf
- severity
- high
- summary
- Crawl4AI: Unauthenticated SSRF on the Docker server streaming crawl path (/crawl/stream)
- cvss_score
- 8.6
- cve_id
- GHSA-wm69-2pc3-rmmf
- cvss_vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- is_ghsa_only
- true
- ghsa_published
- 2026-06-18T17:25:50Z
- source_url
- https://github.com/advisories/GHSA-wm69-2pc3-rmmf
- ghsa_updated
- 2026-06-18T17:25:51Z
Related Entities (4)
VULNERABLE_TO (1)
AFFECTS (1)
HAS_WEAKNESS (1)
REPORTED_BY (1)
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