CVE-2026-70588

MEDIUMPre-NVD 5.05.0—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 82% 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
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.0Exploit: 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 5.26.0 until 6.54.1, the Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content. This issue is fixed in version 6.54.1.

CVSS v3
5.0
EG Score
5.0(medium)
EG Risk
23(Track)
EG Risk 23/100SSVC: 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
Severity50% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

August 4, 2026

Last Modified

August 5, 2026

Advisory Details (4)

Auto-updated Aug 4, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available

Cross-Site Scripting in Universal Import · Advisory · TryGhost/Ghost · GitHub

https://github.com/TryGhost/Ghost/security/advisories/GHSA-2gx6-7gx2-wwcf
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_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_commit Patch Available

commit a8bea3a4ceec (TryGhost/Ghost)

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

https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e

Vendor Advisories for CVE-2026-70588(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 / 35× 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. 2026-08-21 04:39 UTCEG score recompute
  2. 2026-08-20 22:56 UTCEPSS rescore
  3. 2026-08-20 06:55 UTCEG score recompute
  4. 2026-08-19 17:04 UTCEPSS rescore
  5. 2026-08-19 09:11 UTCEG score recompute
  6. 2026-08-18 13:49 UTCEPSS rescore
  7. 2026-08-18 13:49 UTCEPSS rescore
  8. 2026-08-18 11:28 UTCEG score recompute
  9. 2026-08-17 13:47 UTCEPSS rescore
  10. 2026-08-16 16:03 UTCEG score recompute
  11. 2026-08-16 14:56 UTCEPSS rescore
  12. 2026-08-16 14:56 UTCEPSS rescore
  13. 2026-08-16 02:15 UTCEPSS rescore
  14. 2026-08-15 18:21 UTCEG score recompute
  15. 2026-08-15 01:31 UTCEPSS rescore
  16. 2026-08-13 22:55 UTCEG score recompute
  17. 2026-08-13 22:00 UTCEPSS rescore
  18. 2026-08-13 01:12 UTCEG score recompute
  19. 2026-08-12 13:51 UTCEPSS rescore
  20. 2026-08-12 03:30 UTCEG score recompute
  21. 2026-08-11 05:47 UTCEG score recompute
  22. 2026-08-11 00:00 UTCEPSS rescore
  23. 2026-08-10 08:04 UTCEG score recompute
  24. 2026-08-09 13:47 UTCEPSS rescore
  25. 2026-08-09 10:21 UTCEG score recompute
Show 10 more
  1. 2026-08-08 16:37 UTCEPSS rescore
  2. 2026-08-08 12:39 UTCEG score recompute
  3. 2026-08-06 17:14 UTCEG score recompute
  4. 2026-08-06 13:47 UTCEPSS rescore
  5. 2026-08-05 19:31 UTCEG score recompute
  6. 2026-08-05 19:17 UTCEPSS rescore
  7. 2026-08-05 19:17 UTCEPSS rescore
  8. 2026-08-05 18:26 UTCEG score recompute
  9. 2026-08-04 21:31 UTCEG score recompute
  10. 2026-08-04 21:08 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-70588?
CVE-2026-70588 is a medium vulnerability published on August 4, 2026. Ghost is a Node.js content management system. From 5.26.0 until 6.54.1, the Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content. This issue is fixed in version 6.54.1.
When was CVE-2026-70588 disclosed?
CVE-2026-70588 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-2026-70588 actively exploited?
CVE-2026-70588 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 82.3% of all scored CVEs.
What is the CVSS score of CVE-2026-70588?
CVE-2026-70588 has a CVSS v3 base score of 5.0 (NVD).
How do I remediate CVE-2026-70588?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70588, 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-2026-70588

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