# CVE-2026-70590: Ghost: Blind Password Hash Disclosure in Ghost Admin API

> Staff users can leak hashed passwords of other staff via the Admin API, potentially enabling offline cracking and account takeover.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 4 Aug 2026
- **Updated:** 5 Aug 2026
- **Also known as:** BIT-ghost-2026-70590, GHSA-jm22-3w23-5q7w

## What is CVE-2026-70590?

CVE-2026-70590 is a medium-severity vulnerability in TryGhost Ghost, published on 4 Aug 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

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.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2026-70590?

3 open source packages ship an affected version, including ghost.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `ghost` | Bitnami | All versions | 6.54.1 |
| `ghost` | npm | All versions | 6.54.1 |
| `ghost` | npm | All versions | 6.54.1 |

## How do I fix CVE-2026-70590?

Upgrade ghost to 6.54.1 or later.

## Is CVE-2026-70590 being exploited?

There is no known exploitation of CVE-2026-70590 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-70590 and fix it if it is affected.

What it is: CVE-2026-70590 is a medium-severity vulnerability in TryGhost Ghost, published on 4 Aug 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-70590 in the wild and no public exploit code.

Affected packages and fixed versions:
- ghost (Bitnami): affected all versions; fixed in 6.54.1
- ghost (npm): affected all versions; fixed in 6.54.1
- ghost (npm): affected all versions; fixed in 6.54.1

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-70590/ (Markdown: https://insights.sbomify.com/CVE-2026-70590/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-70590
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-70590
- OSV: https://osv.dev/vulnerability/CVE-2026-70590

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-70590/
Summaries are generated and may contain mistakes; the official description above is the record.