CVE-2026-70596

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (22nd percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user's Ghost Admin session, resulting in privilege escalation. This issue is fixed in 6.54.1.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
19
EG Risk 19/100CISA 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
22nd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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

August 5, 2026

Last Modified

September 8, 2026

Advisory Details (4)

Auto-updated Aug 5, 2026
Patch available. Sources: github_pr, github_commit, github_release, github.
github_release Patch Available

v6.54.1

Patch available: TryGhost/Ghost v6.54.1

https://github.com/TryGhost/Ghost/releases/tag/v6.54.1
github_commit Patch Available

commit a8bea3a4ceec (TryGhost/Ghost)

Patch available: TryGhost/Ghost v6.54.1 (contains commit a8bea3a4ceec)

https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e
github_pr Patch Available

Harden content validation

Patch available: TryGhost/Ghost v6.54.1 (PR #29635 merged 2026-07-27)

https://github.com/TryGhost/Ghost/pull/29635
github Patch Available

Cross-Site Scripting in Feature Image Captions · Advisory · TryGhost/Ghost · GitHub

https://github.com/TryGhost/Ghost/security/advisories/GHSA-pr22-p9rp-2cqv

Vendor Advisories for CVE-2026-70596(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)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
ghost—
  • 4.9.0 up to 6.54.1: fixed in 6.54.1
—

Weakness Classification(1)

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

Data Freshness Timeline

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-70596?
CVE-2026-70596 is a medium vulnerability published on August 5, 2026. Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in featureimagecaption that could be used to hijack another staff user's Ghost Admin session, resulting in privilege escalation. This issue is fixed…
When was CVE-2026-70596 disclosed?
CVE-2026-70596 was first published on August 5, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70596 actively exploited?
CVE-2026-70596 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70596?
CVE-2026-70596 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-70596?
A fix for CVE-2026-70596 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-70596 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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