CVE-2026-70590

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 90% 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
4.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.8Exploit: 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. Prior to 6.54.1, any staff-level user was able to leak the hashed passwords of other staff users through the Ghost Admin API. An offline password-guessing attack against the hashes could lead to account takeover if successful, but Device Verification should have prevented an attacker from logging in with a recovered password. Depending on the database used, leaked hashes may not have had the correct casing for all characters, increasing the difficulty of a password-guessing attack. This issue is fixed in version 6.54.1.

CVSS v3
4.8
EG Score
4.8(medium)
EG Risk
22(Track)
EG Risk 22/100SSVC: 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
Severity48% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

August 4, 2026

Last Modified

August 5, 2026

Advisory Details (4)

Auto-updated Aug 4, 2026
Patch available. Sources: github, github_pr, github_commit, github_release.
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 63c31fad7e47 (TryGhost/Ghost)

Patch available: TryGhost/Ghost v6.54.1 (contains commit 63c31fad7e47)

https://github.com/TryGhost/Ghost/commit/63c31fad7e473caa62d8fbb4651a04a2a62b5d00
github_pr Patch Available

Applied NQL transformer functions to more APIs.

Patch available: TryGhost/Ghost v6.54.1 (PR #29628 merged 2026-07-27)

https://github.com/TryGhost/Ghost/pull/29628
github Patch Available

Blind Password Hash Disclosure in Ghost Admin API · Advisory · TryGhost/Ghost · GitHub

https://github.com/TryGhost/Ghost/security/advisories/GHSA-jm22-3w23-5q7w

Vendor Advisories for CVE-2026-70590(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 15× in last 7d / 34× 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. 2026-08-19 21:27 UTCEG score recompute
  2. 2026-08-19 17:04 UTCEPSS rescore
  3. 2026-08-18 18:47 UTCEG score recompute
  4. 2026-08-18 13:49 UTCEPSS rescore
  5. 2026-08-18 13:49 UTCEPSS rescore
  6. 2026-08-17 16:32 UTCEG score recompute
  7. 2026-08-17 13:47 UTCEPSS rescore
  8. 2026-08-16 14:56 UTCEPSS rescore
  9. 2026-08-16 14:56 UTCEPSS rescore
  10. 2026-08-16 13:56 UTCEG score recompute
  11. 2026-08-16 02:15 UTCEPSS rescore
  12. 2026-08-15 11:41 UTCEG score recompute
  13. 2026-08-15 01:31 UTCEPSS rescore
  14. 2026-08-14 09:26 UTCEG score recompute
  15. 2026-08-13 22:00 UTCEPSS rescore
  16. 2026-08-13 07:12 UTCEG score recompute
  17. 2026-08-12 13:51 UTCEPSS rescore
  18. 2026-08-12 04:57 UTCEG score recompute
  19. 2026-08-11 02:42 UTCEG score recompute
  20. 2026-08-11 00:00 UTCEPSS rescore
  21. 2026-08-10 00:27 UTCEG score recompute
  22. 2026-08-09 13:47 UTCEPSS rescore
  23. 2026-08-08 22:13 UTCEG score recompute
  24. 2026-08-08 16:37 UTCEPSS rescore
  25. 2026-08-07 19:58 UTCEG score recompute
Show 9 more
  1. 2026-08-06 17:43 UTCEG score recompute
  2. 2026-08-06 13:47 UTCEPSS rescore
  3. 2026-08-05 19:17 UTCEPSS rescore
  4. 2026-08-05 19:17 UTCEPSS rescore
  5. 2026-08-05 15:28 UTCEG score recompute
  6. 2026-08-05 14:37 UTCEG score recompute
  7. 2026-08-04 22:31 UTCEG score recompute
  8. 2026-08-04 21:42 UTCEG score recompute
  9. 2026-08-04 21:40 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-70590?
CVE-2026-70590 is a medium vulnerability published on August 4, 2026. Ghost is a Node.js content management system. Prior to 6.54.1, any staff-level user was able to leak the hashed passwords of other staff users through the Ghost Admin API. An offline password-guessing attack against the hashes could lead to account takeover if successful, but Device Verification…
When was CVE-2026-70590 disclosed?
CVE-2026-70590 was first published in the National Vulnerability Database on August 4, 2026, with the most recent update 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-2026-70590 actively exploited?
CVE-2026-70590 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 90.5% of all scored CVEs.
What is the CVSS score of CVE-2026-70590?
CVE-2026-70590 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2026-70590?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70590, 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-2026-70590

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