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🛡️ CVE-2026-70594 — ghost

🟡 CVSS 6.7 — Medium ✅ No Known Exploit CWE-384 NVD
6.7
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Ghost: Session Fixation in Ghost Admin

Impact

Ghost Admin did not invalidate existing sessions on login which could have allowed for session fixation attacks. Successful exploitation would have required another vulnerability on the same domain where Ghost Admin was hosted.

Vulnerable versions

This vulnerability is present in Ghost from v2.2.0 to v6.54.0.

Patches

v6.54.1 contains a fix for this issue.

How to update

For self-hosters using Docker, find [Docker's official Ghost image here](https://hub.docker.com/_/ghost). Updating a Docker-based Ghost instance [is documented here](https://docs.ghost.org/install/docker#updating-ghost).

If your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update).

References

Ghost thanks meifukun for disclosing this vulnerability responsibly.

For more information

If you have any questions or comments about this advisory, email Ghost at [security@ghost.org](mailto:[email protected]).

How this vulnerability can be exploited

This issue can be reached from an adjacent network, attack complexity is high, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L

  • Attack vector: Adjacent network — the attacker has to sit on the same local or logical network.
  • Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: Required — someone has to click, open or visit something.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2026-70594 is classified as CWE-384: Session Fixation. A session identifier is not renewed at login, so an identifier planted beforehand becomes an authenticated session.

Affected software

CVE-2026-70594 is recorded against 2 packages.

  • ghost
  • unknown

Timeline and source

Published on 17 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
nvd.nist.gov (Web)

Other advisories for this package

ghost has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-384: Session Fixation) in other software:

Details

Severity MEDIUM
CVSS Score 6.7
CVSS Vector CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
CWE CWE-384
Public Exploit ✅ No
Source NVD
Published 2026-08-17
Updated 2026-08-20
Modified 2026-08-17
Fix URL N/A

Affected Packages

Software From version Fixed in
ghost — —
unknown — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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