# CVE-2026-70589 — TryGhost Ghost

> As of 2026-08-05, CVE-2026-70589 is a MEDIUM-severity vulnerability in TryGhost Ghost, CVSS v3.1 4.8, EPSS 0.1% (6.7th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-70589 as of 2026-08-05; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-05

## What is CVE-2026-70589?

Ghost is a Node.js content management system. From 4.22.0 until 6.54.1, a missing validation check allowed users to redeem subscription offers that were no longer active. This issue is fixed in version 6.54.1.

The record classifies CVE-2026-70589 under weakness class [CWE-20](https://intel.threadlinqs.com/cwe/CWE-20). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction. 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:N/UI:N/S:U/C:L/I:L/A:N`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 6.7% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 2.7/10 — 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-2026-70589 being exploited?

It currently carries a trending score of 31 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [TryGhost](https://intel.threadlinqs.com/vendors/tryghost): Ghost

## How to fix CVE-2026-70589

No vendor patch reference has been recorded for CVE-2026-70589 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-2026-70589

No threat campaign in the Threadlinqs corpus currently references CVE-2026-70589, 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. Last verified by Threadlinqs on 2026-08-06. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com](https://github.com/TryGhost/Ghost/security/advisories/GHSA-4wx2-7gvj-qfq3)

**Other references**

- [github.com](https://github.com/TryGhost/Ghost/commit/d91c0fc52dfc987d71a9803dbcbe6447d21b92fb)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-70589
Full detection coverage and IOCs for threats exploiting CVE-2026-70589 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp