CVE-2026-56700

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-01. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

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

Grav CMS before 2.0.0-beta.2 contains multiple code-execution vulnerabilities. Three unsafe unserialize() calls - in Scheduler\JobQueue, Framework\Cache\Adapter\FileCache, and Session - deserialize untrusted data without restricting allowed classes, enabling PHP object injection and, via a gadget chain, arbitrary code execution where an attacker controls the serialized input. Additionally, InstallCommand's git clone operation passes the branch, url, and path parameters into a shell command without escaping, allowing OS command injection via plugin/theme installation (which requires admin access). A Twig security blocklist bypass (server-side template injection) is also present. The issues are fixed in 2.0.0-beta.2.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
74.2%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 1, 2026

Advisory Details (2)

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

Grav - Multiple Remote Code Execution Vulnerabilities via Unsafe Unserialize and Command Injection | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-multiple-remote-code-execution-vulnerabilities-via-unsafe-unserialize-and-command-injection
github Patch Available

Multiple RCE vectors: unsafe unserialize (x3), command injection in git clone, SSTI blocklist bypass (CWE-502, CWE-78, CWE-1336) · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-vj3m-2g9h-vm4p

Vendor Advisories for CVE-2026-56700(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 90× in last 7d / 90× 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. 2026-07-07 03:53 UTCEG score recompute
  2. 2026-07-07 03:53 UTCGHSA enrichment
  3. 2026-07-07 00:01 UTCEG score recompute
  4. 2026-07-07 00:01 UTCGHSA enrichment
  5. 2026-07-06 20:16 UTCEG score recompute
  6. 2026-07-06 20:16 UTCGHSA enrichment
  7. 2026-07-06 16:29 UTCEG score recompute
  8. 2026-07-06 16:29 UTCGHSA enrichment
  9. 2026-07-06 16:27 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 12:45 UTCEG score recompute
  12. 2026-07-06 12:45 UTCGHSA enrichment
  13. 2026-07-06 09:00 UTCEG score recompute
  14. 2026-07-06 09:00 UTCGHSA enrichment
  15. 2026-07-06 05:12 UTCEG score recompute
  16. 2026-07-06 05:12 UTCGHSA enrichment
  17. 2026-07-06 02:23 UTCEPSS rescore
  18. 2026-07-06 02:23 UTCEPSS rescore
  19. 2026-07-06 01:25 UTCEG score recompute
  20. 2026-07-06 01:25 UTCGHSA enrichment
  21. 2026-07-05 21:40 UTCEG score recompute
  22. 2026-07-05 21:40 UTCGHSA enrichment
  23. 2026-07-05 17:55 UTCEG score recompute
  24. 2026-07-05 17:55 UTCGHSA enrichment
  25. 2026-07-05 14:10 UTCEG score recompute
Show 65 more
  1. 2026-07-05 14:10 UTCGHSA enrichment
  2. 2026-07-05 10:25 UTCEG score recompute
  3. 2026-07-05 10:25 UTCGHSA enrichment
  4. 2026-07-05 06:40 UTCEG score recompute
  5. 2026-07-05 06:40 UTCGHSA enrichment
  6. 2026-07-05 02:53 UTCEG score recompute
  7. 2026-07-05 02:53 UTCGHSA enrichment
  8. 2026-07-05 02:31 UTCEPSS rescore
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-04 23:08 UTCEG score recompute
  11. 2026-07-04 23:08 UTCGHSA enrichment
  12. 2026-07-04 19:23 UTCEG score recompute
  13. 2026-07-04 19:23 UTCGHSA enrichment
  14. 2026-07-04 15:39 UTCEG score recompute
  15. 2026-07-04 15:38 UTCGHSA enrichment
  16. 2026-07-04 11:52 UTCEG score recompute
  17. 2026-07-04 11:52 UTCGHSA enrichment
  18. 2026-07-04 08:08 UTCEG score recompute
  19. 2026-07-04 08:07 UTCGHSA enrichment
  20. 2026-07-04 06:31 UTCEPSS rescore
  21. 2026-07-04 06:31 UTCEPSS rescore
  22. 2026-07-04 04:22 UTCEG score recompute
  23. 2026-07-04 04:22 UTCGHSA enrichment
  24. 2026-07-04 00:37 UTCEG score recompute
  25. 2026-07-04 00:37 UTCGHSA enrichment
  26. 2026-07-03 20:51 UTCEG score recompute
  27. 2026-07-03 20:51 UTCGHSA enrichment
  28. 2026-07-03 17:06 UTCEG score recompute
  29. 2026-07-03 17:06 UTCGHSA enrichment
  30. 2026-07-03 13:21 UTCEG score recompute
  31. 2026-07-03 13:21 UTCGHSA enrichment
  32. 2026-07-03 09:36 UTCEG score recompute
  33. 2026-07-03 09:36 UTCGHSA enrichment
  34. 2026-07-03 05:52 UTCEG score recompute
  35. 2026-07-03 05:52 UTCGHSA enrichment
  36. 2026-07-03 02:03 UTCEG score recompute
  37. 2026-07-03 02:03 UTCGHSA enrichment
  38. 2026-07-02 22:18 UTCEG score recompute
  39. 2026-07-02 22:18 UTCGHSA enrichment
  40. 2026-07-02 18:32 UTCEG score recompute
  41. 2026-07-02 18:32 UTCGHSA enrichment
  42. 2026-07-02 14:47 UTCEG score recompute
  43. 2026-07-02 14:46 UTCGHSA enrichment
  44. 2026-07-02 11:02 UTCEG score recompute
  45. 2026-07-02 11:02 UTCGHSA enrichment
  46. 2026-07-02 07:17 UTCEG score recompute
  47. 2026-07-02 07:17 UTCGHSA enrichment
  48. 2026-07-02 03:32 UTCEG score recompute
  49. 2026-07-02 03:32 UTCGHSA enrichment
  50. 2026-07-01 23:48 UTCEG score recompute
  51. 2026-07-01 23:48 UTCGHSA enrichment
  52. 2026-07-01 20:03 UTCEG score recompute
  53. 2026-07-01 20:03 UTCGHSA enrichment
  54. 2026-07-01 17:06 UTCNVD updateCVSS v4 → 9.3
  55. 2026-07-01 16:18 UTCEG score recompute
  56. 2026-07-01 16:18 UTCGHSA enrichment
  57. 2026-07-01 15:07 UTCEPSS rescore
  58. 2026-07-01 12:34 UTCEG score recompute
  59. 2026-07-01 12:34 UTCGHSA enrichment
  60. 2026-07-01 08:49 UTCEG score recompute
  61. 2026-07-01 08:49 UTCGHSA enrichment
  62. 2026-07-01 05:04 UTCEG score recompute
  63. 2026-07-01 05:04 UTCGHSA enrichment
  64. 2026-07-01 01:19 UTCEG score recompute
  65. 2026-07-01 01:19 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-56700?
CVE-2026-56700 is a critical vulnerability published on July 1, 2026. Grav CMS before 2.0.0-beta.2 contains multiple code-execution vulnerabilities. Three unsafe unserialize() calls - in Scheduler\JobQueue, Framework\Cache\Adapter\FileCache, and Session - deserialize untrusted data without restricting allowed classes, enabling PHP object injection and, via a gadget…
When was CVE-2026-56700 disclosed?
CVE-2026-56700 was first published in the National Vulnerability Database on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56700 actively exploited?
CVE-2026-56700 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 74.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56700?
CVE-2026-56700 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-56700?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56700, 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

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