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: 2.5%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
9.8CRITICALmedium confidence
EG Risk
60
EG Risk 60/100CISA SSVC

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%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
2.5%
EPSS %ILE
84th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 1, 2026

Last Modified

October 8, 2026

Advisory Details (2)

Auto-updated Oct 8, 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
githubMentions a patch (unverified)

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 rangeFix by version rangeDependents
getgrav/grav0.8.0 ... 2.0.0-beta.1 (321 versions)
  • every version up to 2.0.0-beta.2: fixed in 2.0.0-beta.2
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 44× 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 446 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

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 on July 1, 2026, with the most recent update on October 8, 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 2.5% probability of exploitation in the next 30 days (84th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-56700?
CVE-2026-56700 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-56700?
A fix for CVE-2026-56700 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-56700 are linked in the Vendor Advisories panel on this page.

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