CVE-2026-56700

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM 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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 9.8Exploit: None knownExposed: 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(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
84%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 1, 2026

Advisory Details (2)

Auto-updated Sep 13, 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 18× in last 7d / 81× 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 422 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 10:23 UTCGHSA enrichment
  3. 2026-09-18 06:38 UTCEG score recompute
  4. 2026-09-18 06:38 UTCGHSA enrichment
  5. 2026-09-17 19:31 UTCEPSS rescore
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-15 03:11 UTCEPSS rescore
  9. 2026-09-14 07:59 UTCGHSA enrichment
  10. 2026-09-14 04:13 UTCGHSA enrichment
  11. 2026-09-14 00:28 UTCEG score recompute
  12. 2026-09-14 00:28 UTCGHSA enrichment
  13. 2026-09-13 16:47 UTCEPSS rescore
  14. 2026-09-13 12:56 UTCGHSA enrichment
  15. 2026-09-13 09:10 UTCEG score recompute
  16. 2026-09-13 09:10 UTCGHSA enrichment
  17. 2026-09-12 14:52 UTCEG score recompute
  18. 2026-09-12 14:52 UTCGHSA enrichment
  19. 2026-09-11 14:53 UTCEPSS rescore
  20. 2026-09-10 09:35 UTCEPSS rescore
  21. 2026-09-08 22:01 UTCEPSS rescore
  22. 2026-09-07 16:01 UTCEPSS rescore
  23. 2026-09-06 14:28 UTCEG score recompute
  24. 2026-09-06 14:28 UTCGHSA enrichment
  25. 2026-09-06 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-09-06 04:58 UTCEG score recompute
  2. 2026-09-06 04:58 UTCGHSA enrichment
  3. 2026-09-04 05:07 UTCEPSS rescore
  4. 2026-09-02 14:12 UTCEPSS rescore
  5. 2026-09-01 13:54 UTCEPSS rescore
  6. 2026-09-01 04:40 UTCEPSS rescore
  7. 2026-08-31 00:58 UTCGHSA enrichment
  8. 2026-08-30 21:13 UTCEG score recompute
  9. 2026-08-30 21:13 UTCGHSA enrichment
  10. 2026-08-30 19:17 UTCEPSS rescore
  11. 2026-08-30 17:29 UTCGHSA enrichment
  12. 2026-08-30 13:44 UTCEG score recompute
  13. 2026-08-30 13:44 UTCGHSA enrichment
  14. 2026-08-30 01:22 UTCEPSS rescore
  15. 2026-08-28 21:42 UTCEPSS rescore
  16. 2026-08-28 02:48 UTCGHSA enrichment
  17. 2026-08-27 22:30 UTCEG score recompute
  18. 2026-08-27 22:30 UTCGHSA enrichment
  19. 2026-08-27 14:25 UTCEPSS rescore
  20. 2026-08-26 14:46 UTCEPSS rescore
  21. 2026-08-25 13:49 UTCEPSS rescore
  22. 2026-08-25 04:32 UTCGHSA enrichment
  23. 2026-08-25 00:47 UTCGHSA enrichment
  24. 2026-08-24 21:03 UTCGHSA enrichment
  25. 2026-08-24 14:46 UTCEG score recompute
  26. 2026-08-24 14:46 UTCGHSA enrichment
  27. 2026-08-24 10:59 UTCEG score recompute
  28. 2026-08-24 10:59 UTCGHSA enrichment
  29. 2026-08-24 04:16 UTCGHSA enrichment
  30. 2026-08-23 22:28 UTCGHSA enrichment
  31. 2026-08-23 18:43 UTCGHSA enrichment
  32. 2026-08-23 14:58 UTCGHSA enrichment
  33. 2026-08-23 11:13 UTCGHSA enrichment
  34. 2026-08-23 07:28 UTCGHSA enrichment
  35. 2026-08-23 03:40 UTCEG score recompute
  36. 2026-08-23 03:40 UTCGHSA enrichment
  37. 2026-08-23 00:19 UTCEPSS rescore
  38. 2026-08-22 23:53 UTCGHSA enrichment
  39. 2026-08-22 20:08 UTCGHSA enrichment
  40. 2026-08-22 15:05 UTCGHSA enrichment
  41. 2026-08-22 11:15 UTCGHSA enrichment
  42. 2026-08-22 07:30 UTCGHSA enrichment
  43. 2026-08-22 00:47 UTCEG score recompute
  44. 2026-08-22 00:47 UTCGHSA enrichment
  45. 2026-08-21 23:49 UTCEPSS rescore
  46. 2026-08-21 21:02 UTCGHSA enrichment
  47. 2026-08-21 17:18 UTCGHSA enrichment
  48. 2026-08-21 12:12 UTCGHSA enrichment
  49. 2026-08-21 08:26 UTCGHSA enrichment
  50. 2026-08-21 04:41 UTCGHSA enrichment
  51. 2026-08-20 23:43 UTCEG score recompute
  52. 2026-08-20 23:43 UTCGHSA enrichment
  53. 2026-08-20 22:55 UTCEPSS rescore
  54. 2026-08-20 19:58 UTCGHSA enrichment
  55. 2026-08-20 16:13 UTCGHSA enrichment
  56. 2026-08-20 12:22 UTCGHSA enrichment
  57. 2026-08-20 08:37 UTCGHSA enrichment
  58. 2026-08-20 04:53 UTCEG score recompute
  59. 2026-08-20 04:53 UTCGHSA enrichment
  60. 2026-08-19 17:04 UTCEPSS rescore
  61. 2026-08-19 16:29 UTCGHSA enrichment
  62. 2026-08-19 12:32 UTCGHSA enrichment
  63. 2026-08-19 08:37 UTCGHSA enrichment
  64. 2026-08-19 04:46 UTCGHSA enrichment
  65. 2026-08-19 01:00 UTCGHSA enrichment
  66. 2026-08-18 21:03 UTCEG score recompute
  67. 2026-08-18 21:02 UTCGHSA enrichment
  68. 2026-08-18 13:48 UTCEPSS rescore
  69. 2026-08-18 04:53 UTCGHSA enrichment
  70. 2026-08-17 23:40 UTCEG score recompute
  71. 2026-08-17 23:40 UTCGHSA enrichment
  72. 2026-08-17 13:47 UTCEPSS rescore
  73. 2026-08-17 13:37 UTCGHSA enrichment
  74. 2026-08-17 09:52 UTCGHSA enrichment
  75. 2026-08-17 06:08 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 3% probability of exploitation in the next 30 days, which ranks it in the top 15.8% of all scored CVEs.
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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