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: 0.2%, top 92% of all CVEs by exploit prediction. 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%CVSS: 4.3Exploit: None knownExposed: 0

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

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
4.3(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 5, 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 rangeFixed inDependents
ghost—6.54.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 28× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-19 22:13 UTCEG score recompute
  3. 2026-08-19 17:04 UTCEPSS rescore
  4. 2026-08-18 00:58 UTCEG score recompute
  5. 2026-08-17 13:47 UTCEPSS rescore
  6. 2026-08-17 01:57 UTCEG score recompute
  7. 2026-08-16 14:56 UTCEPSS rescore
  8. 2026-08-16 14:56 UTCEPSS rescore
  9. 2026-08-16 03:20 UTCEG score recompute
  10. 2026-08-16 02:15 UTCEPSS rescore
  11. 2026-08-15 04:43 UTCEG score recompute
  12. 2026-08-15 01:31 UTCEPSS rescore
  13. 2026-08-14 06:06 UTCEG score recompute
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-13 07:29 UTCEG score recompute
  16. 2026-08-12 13:51 UTCEPSS rescore
  17. 2026-08-12 08:51 UTCEG score recompute
  18. 2026-08-11 10:14 UTCEG score recompute
  19. 2026-08-11 00:00 UTCEPSS rescore
  20. 2026-08-10 11:37 UTCEG score recompute
  21. 2026-08-09 13:47 UTCEPSS rescore
  22. 2026-08-08 14:24 UTCEG score recompute
  23. 2026-08-06 17:09 UTCEG score recompute
  24. 2026-08-06 13:47 UTCEPSS rescore
  25. 2026-08-05 18:32 UTCEG score recompute
Show 3 more
  1. 2026-08-05 17:57 UTCEG score recompute
  2. 2026-08-05 16:29 UTCEG score recompute
  3. 2026-08-05 15:07 UTCEG score recompute

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 in the National Vulnerability Database on August 5, 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% probability of exploitation in the next 30 days, which ranks it in the top 92.2% of all scored CVEs.
What is the CVSS score of CVE-2026-70596?
CVE-2026-70596 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-70596?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70596, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-70596

Explore →

Is Your Infrastructure Affected by CVE-2026-70596?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs