Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Crawl4AI versions before 0.8.8 are affected by an SSRF filter bypass in the Docker API server. An unauthenticated attacker who can reach the server can encode internal IPv4 addresses, including cloud metadata endpoints, in IPv6 transition forms or use the IPv6 unspecified address to get past the blocklist and make the server fetch internal URLs. Upgrade to Crawl4AI 0.8.8 or later; as a workaround, enable the API token (CRAWL4AI_API_TOKEN) and restrict the container's outbound network access.
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 |
|---|---|---|---|---|
| 7.5 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0043, the 38th 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