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 — 3 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)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
74.6%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 1, 2026

Advisory Details (2)

Auto-updated Jul 11, 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.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
getgrav/grav0.8.0 ... 2.0.0-beta.1 (317 versions)2.0.0-beta.2—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 140× 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 140 total refreshes for this CVE.

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

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 74.6% 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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