CVE-2026-56264

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-01. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Crawl4AI before 0.8.7 contains an arbitrary JavaScript execution vulnerability in the Docker API server's /execute_js endpoint, which accepts and executes arbitrary user-supplied JavaScript in the server's browser context with --disable-web-security enabled. An attacker can execute arbitrary JavaScript and, combined with the browser's relaxed security settings, perform server-side request forgery against internal services.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
25.8%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 14, 2026

Advisory Details (3)

Auto-updated Jul 3, 2026
Patch available. Sources: github.
generic

Crawl4AI - Arbitrary JavaScript Execution via /execute_js Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/crawl4ai-arbitrary-javascript-execution-via-execute-js-endpoint
github Patch Available

Multiple Docker API Vulnerabilities - File Write, SSRF, Auth Bypass, XSS, JS Execution · Advisory · unclecode/crawl4ai · GitHub

https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg
generic

GitHub - unclecode/crawl4ai: 🚀🤖 Crawl4AI: Open-source LLM Friendly Web Crawler & Scraper. Don't be shy, join here: https://discord.gg/jP8KfhDhyN · GitHub

https://github.com/unclecode/crawl4ai

Vendor Advisories for CVE-2026-56264(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
crawl4ai0.3.0 ... 0.8.6 (64 versions)0.8.7—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 71× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 03:20 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:25 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 14:31 UTCEPSS rescore
  7. 2026-07-19 02:29 UTCEPSS rescore
  8. 2026-07-18 10:04 UTCEPSS rescore
  9. 2026-07-16 21:39 UTCGHSA enrichment
  10. 2026-07-16 17:03 UTCEPSS rescore
  11. 2026-07-16 09:48 UTCGHSA enrichment
  12. 2026-07-15 21:56 UTCGHSA enrichment
  13. 2026-07-15 16:57 UTCEPSS rescore
  14. 2026-07-15 16:57 UTCEPSS rescore
  15. 2026-07-15 10:04 UTCGHSA enrichment
  16. 2026-07-15 02:00 UTCEPSS rescore
  17. 2026-07-15 02:00 UTCEPSS rescore
  18. 2026-07-14 22:11 UTCGHSA enrichment
  19. 2026-07-14 21:35 UTCMITRE cvelistV5CVSS v3 → 8.1 · severity → HIGH
  20. 2026-07-14 10:17 UTCGHSA enrichment
  21. 2026-07-13 22:31 UTCEPSS rescore
  22. 2026-07-13 22:24 UTCGHSA enrichment
  23. 2026-07-13 10:32 UTCGHSA enrichment
  24. 2026-07-13 06:13 UTCEPSS rescore
  25. 2026-07-13 06:13 UTCEPSS rescore
Show 46 more
  1. 2026-07-12 22:39 UTCGHSA enrichment
  2. 2026-07-12 10:48 UTCGHSA enrichment
  3. 2026-07-12 05:46 UTCEPSS rescore
  4. 2026-07-11 22:55 UTCGHSA enrichment
  5. 2026-07-11 11:03 UTCGHSA enrichment
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-11 08:27 UTCEPSS rescore
  8. 2026-07-10 23:11 UTCGHSA enrichment
  9. 2026-07-10 11:20 UTCGHSA enrichment
  10. 2026-07-09 23:29 UTCGHSA enrichment
  11. 2026-07-09 19:10 UTCEPSS rescore
  12. 2026-07-09 19:10 UTCEPSS rescore
  13. 2026-07-09 11:37 UTCGHSA enrichment
  14. 2026-07-08 23:44 UTCGHSA enrichment
  15. 2026-07-08 15:16 UTCEPSS rescore
  16. 2026-07-08 15:16 UTCEPSS rescore
  17. 2026-07-08 11:53 UTCGHSA enrichment
  18. 2026-07-07 23:37 UTCGHSA enrichment
  19. 2026-07-07 13:46 UTCEPSS rescore
  20. 2026-07-07 13:46 UTCEPSS rescore
  21. 2026-07-07 11:45 UTCGHSA enrichment
  22. 2026-07-06 23:53 UTCGHSA enrichment
  23. 2026-07-06 16:27 UTCEPSS rescore
  24. 2026-07-06 16:27 UTCEPSS rescore
  25. 2026-07-06 16:27 UTCNVD updateCVSS v3 → 6.1 · severity → MEDIUM
  26. 2026-07-06 12:01 UTCGHSA enrichment
  27. 2026-07-06 02:23 UTCEPSS rescore
  28. 2026-07-06 02:23 UTCEPSS rescore
  29. 2026-07-06 00:06 UTCGHSA enrichment
  30. 2026-07-05 12:12 UTCGHSA enrichment
  31. 2026-07-05 02:31 UTCEPSS rescore
  32. 2026-07-05 02:30 UTCEPSS rescore
  33. 2026-07-05 00:20 UTCGHSA enrichment
  34. 2026-07-04 12:27 UTCGHSA enrichment
  35. 2026-07-04 06:31 UTCEPSS rescore
  36. 2026-07-04 06:31 UTCEPSS rescore
  37. 2026-07-04 00:35 UTCGHSA enrichment
  38. 2026-07-03 12:41 UTCGHSA enrichment
  39. 2026-07-03 00:48 UTCGHSA enrichment
  40. 2026-07-02 12:57 UTCGHSA enrichment
  41. 2026-07-02 01:05 UTCGHSA enrichment
  42. 2026-07-01 17:06 UTCNVD updateCVSS v4 → 9.2 · severity → HIGH
  43. 2026-07-01 15:07 UTCEPSS rescore
  44. 2026-07-01 13:13 UTCGHSA enrichment
  45. 2026-07-01 01:20 UTCEG score recompute
  46. 2026-07-01 01:20 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56264?
CVE-2026-56264 is a high vulnerability published on July 1, 2026. Crawl4AI before 0.8.7 contains an arbitrary JavaScript execution vulnerability in the Docker API server's /execute_js endpoint, which accepts and executes arbitrary user-supplied JavaScript in the server's browser context with --disable-web-security enabled. An attacker can execute arbitrary…
When was CVE-2026-56264 disclosed?
CVE-2026-56264 was first published in the National Vulnerability Database on July 1, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56264 actively exploited?
CVE-2026-56264 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56264?
CVE-2026-56264 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-56264?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56264, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-56264

Explore →

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