What is CVE-2026-70590?
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.
The record classifies CVE-2026-70590 under weakness class CWE-200. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs high-privilege credentials, needs a user to take an action first, and has high impact on integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 62 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 4.8 — MEDIUM
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:H/A:N - EPSS (FIRST)
- 0.1% probability of exploitation in the next 30 days, higher than 9.3% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 2.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-08-04, last modified 2026-08-05
Is CVE-2026-70590 being exploited?
It currently carries a trending score of 32 in the Threadlinqs vulnerability feed.
Affected products and versions
- TryGhost: Ghost
Affected software packages:
npm:ghost— patched in 6.54.1
How to fix CVE-2026-70590
Fixed versions are recorded for 1 package: npm:ghost 6.54.1. No vendor patch reference has been recorded for CVE-2026-70590 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-70590
No threat campaign in the Threadlinqs corpus currently references CVE-2026-70590, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.
Sources
Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.