CVE-2026-53755: Crawl4AI: SSRF via proxy settings in the Docker server bypasses the crawl-URL SSRF check
unclecode · crawl4ai
Affected: unclecode crawl4ai · Exploitation: check available, not yet exploited
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 75% of scored CVEs
DescriptionCVE.org
Crawl4AI is an open-source LLM friendly web crawler & scraper. Prior to 0.8.9, the Docker API server applied its SSRF destination check to the crawl target URL only, not to the proxy address. An unauthenticated request could supply a proxy pointing at an internal IP and route the browser through it, reaching internal services and cloud-metadata endpoints, while using a perfectly valid crawl URL. The Docker API is unauthenticated by default. /crawl, /crawl/stream, and /crawl/job accept a browser_config (and crawler_config). The following all feed Chromium's egress and were unchecked: browser_config.proxy_config.server, browser_config.proxy (deprecated field), crawler_config.proxy_config.server, and --proxy-server / --proxy-pac-url / --proxy-bypass-list / --host-resolver-rules flags in browser_config.extra_args. This vulnerability is fixed in 0.8.9.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- unclecode · crawl4ai< 0.8.9
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Check available, not yet exploited. A public nuclei template can confirm it on a system you are authorised to test.
- CISA KEV
- Not listed
- Public check
- crawl4ai < 0.8.9 - Server Side Request Forgery · nuclei template in projectdiscovery/nuclei-templates
- Weakness
- Server-Side Request Forgery
- Vendor
- unclecode
- Published
- June 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-53755 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.