CVE-2026-56259 json
Crawl4AI - LLM Credential Exfiltration via base_url and Environment Variable Resolution
published 2026-06-16 4 mo ago modified 2026-09-24 45 d ago also GHSA-f989-c77f-r2cq , PYSEC-2026-3448 , EUVD-2026-43226
- cvss
- 8.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 37%
- public exploits
- 0
- none known
Summary
Crawl4AI before 0.8.8 contains credential exfiltration vulnerabilities in the Docker API server that allow attackers to redirect LLM API calls to attacker-controlled endpoints and read arbitrary environment variables. Attackers can exploit the unauthenticated /md, /llm, and /llm/job endpoints by supplying a malicious base_url parameter and setting api_token to env:VARIABLE_NAME to exfiltrate provider API keys and server secrets including JWT SECRET_KEY for authentication bypass.
Patch / fix
- pypi crawl4ai 0.8.8
- Crawl4AI Crawl4AI 0.8.8
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
| CNA | 4.0 | 8.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| GitHub | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | crawl4ai | <0.8.8 |
0.8.8 |
Affected products
- Crawl4AI Crawl4AI
Classification
References
-
github.com
/unclecode/crawl4ai/security/advisories/GHSA-f989-c77f-r2cq
vendor-advisory, web, mitigation, advisory
-
vulncheck.com
/advisories/crawl4ai-llm-credential-exfiltration-via-base-url-and-environment-variable-resolution
third-party-advisory, advisory
-
github.com
/unclecode/crawl4ai
package
Sources
- CVE List CVE-2026-56259
- GitHub Advisory GHSA-f989-c77f-r2cq
- NVD CVE-2026-56259
- OSV PYSEC-2026-3448
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