CVE-2026-56264

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM 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
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 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(medium)
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 PROB
0%
EPSS %ILE
40%
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 11× in last 7d / 96× 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.

Showing the most recent 100 of 201 total refreshes for this CVE.

  1. 2026-09-01 04:40 UTCEPSS rescore
  2. 2026-08-30 19:17 UTCEPSS rescore
  3. 2026-08-30 17:10 UTCEG score recompute
  4. 2026-08-30 17:10 UTCGHSA enrichment
  5. 2026-08-30 01:22 UTCEPSS rescore
  6. 2026-08-28 21:41 UTCEPSS rescore
  7. 2026-08-27 22:31 UTCEG score recompute
  8. 2026-08-27 22:31 UTCGHSA enrichment
  9. 2026-08-27 14:25 UTCEPSS rescore
  10. 2026-08-26 14:46 UTCEPSS rescore
  11. 2026-08-25 13:49 UTCEPSS rescore
  12. 2026-08-24 23:02 UTCEG score recompute
  13. 2026-08-24 23:02 UTCGHSA enrichment
  14. 2026-08-24 11:01 UTCEG score recompute
  15. 2026-08-24 11:01 UTCGHSA enrichment
  16. 2026-08-23 19:53 UTCGHSA enrichment
  17. 2026-08-23 08:01 UTCEG score recompute
  18. 2026-08-23 08:01 UTCGHSA enrichment
  19. 2026-08-23 00:19 UTCEPSS rescore
  20. 2026-08-22 20:09 UTCGHSA enrichment
  21. 2026-08-22 07:32 UTCEG score recompute
  22. 2026-08-22 07:32 UTCGHSA enrichment
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-21 17:18 UTCGHSA enrichment
  25. 2026-08-21 04:46 UTCEG score recompute
Show 75 more
  1. 2026-08-21 04:46 UTCGHSA enrichment
  2. 2026-08-20 22:55 UTCEPSS rescore
  3. 2026-08-20 16:55 UTCGHSA enrichment
  4. 2026-08-20 04:54 UTCEG score recompute
  5. 2026-08-20 04:54 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 10:22 UTCGHSA enrichment
  8. 2026-08-18 21:05 UTCEG score recompute
  9. 2026-08-18 21:05 UTCGHSA enrichment
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-18 04:54 UTCEG score recompute
  12. 2026-08-18 04:54 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 13:10 UTCGHSA enrichment
  15. 2026-08-17 01:18 UTCEG score recompute
  16. 2026-08-17 01:18 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 13:26 UTCEG score recompute
  19. 2026-08-16 13:26 UTCGHSA enrichment
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-16 01:35 UTCGHSA enrichment
  22. 2026-08-15 13:43 UTCGHSA enrichment
  23. 2026-08-15 01:51 UTCEG score recompute
  24. 2026-08-15 01:51 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
  26. 2026-08-14 14:00 UTCGHSA enrichment
  27. 2026-08-14 02:08 UTCEG score recompute
  28. 2026-08-14 02:08 UTCGHSA enrichment
  29. 2026-08-13 22:00 UTCEPSS rescore
  30. 2026-08-13 14:17 UTCGHSA enrichment
  31. 2026-08-13 02:25 UTCGHSA enrichment
  32. 2026-08-12 14:34 UTCEG score recompute
  33. 2026-08-12 14:34 UTCGHSA enrichment
  34. 2026-08-12 13:51 UTCEPSS rescore
  35. 2026-08-12 02:36 UTCGHSA enrichment
  36. 2026-08-11 14:44 UTCEG score recompute
  37. 2026-08-11 14:44 UTCGHSA enrichment
  38. 2026-08-11 02:52 UTCEG score recompute
  39. 2026-08-11 02:52 UTCGHSA enrichment
  40. 2026-08-11 00:00 UTCEPSS rescore
  41. 2026-08-10 15:01 UTCGHSA enrichment
  42. 2026-08-10 03:09 UTCGHSA enrichment
  43. 2026-08-09 15:17 UTCEG score recompute
  44. 2026-08-09 15:17 UTCGHSA enrichment
  45. 2026-08-09 13:46 UTCEPSS rescore
  46. 2026-08-09 03:26 UTCEG score recompute
  47. 2026-08-09 03:26 UTCGHSA enrichment
  48. 2026-08-08 16:37 UTCEPSS rescore
  49. 2026-08-08 15:35 UTCGHSA enrichment
  50. 2026-08-08 03:43 UTCEG score recompute
  51. 2026-08-08 03:43 UTCGHSA enrichment
  52. 2026-08-07 15:51 UTCGHSA enrichment
  53. 2026-08-07 03:59 UTCGHSA enrichment
  54. 2026-08-06 16:07 UTCEG score recompute
  55. 2026-08-06 16:07 UTCGHSA enrichment
  56. 2026-08-06 13:47 UTCEPSS rescore
  57. 2026-08-06 04:16 UTCEG score recompute
  58. 2026-08-06 04:16 UTCGHSA enrichment
  59. 2026-08-05 19:17 UTCEPSS rescore
  60. 2026-08-05 16:25 UTCGHSA enrichment
  61. 2026-08-05 02:26 UTCEG score recompute
  62. 2026-08-05 02:26 UTCGHSA enrichment
  63. 2026-08-04 15:10 UTCEPSS rescore
  64. 2026-08-04 14:34 UTCEG score recompute
  65. 2026-08-04 14:34 UTCGHSA enrichment
  66. 2026-08-04 10:39 UTCEPSS rescore
  67. 2026-08-04 01:20 UTCGHSA enrichment
  68. 2026-08-03 13:28 UTCEG score recompute
  69. 2026-08-03 13:28 UTCGHSA enrichment
  70. 2026-08-03 10:36 UTCEPSS rescore
  71. 2026-08-03 01:29 UTCGHSA enrichment
  72. 2026-08-02 13:38 UTCEG score recompute
  73. 2026-08-02 13:38 UTCGHSA enrichment
  74. 2026-08-02 02:27 UTCEPSS rescore
  75. 2026-08-02 01:47 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 0% probability of exploitation in the next 30 days, which ranks it in the top 60.0% of all scored CVEs.
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

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