What is GHSA-cgc2-rcrh-qr5x?

GHSA-cgc2-rcrh-qr5x is a security advisory published by GitHub Security Advisories with High severity. Ghost Vulnerable to Remote Code Execution via Malicious Themes

Which CVE IDs does GHSA-cgc2-rcrh-qr5x cover?

GHSA-cgc2-rcrh-qr5x covers the following CVE IDs: CVE-2026-29053. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-cgc2-rcrh-qr5x?

GHSA-cgc2-rcrh-qr5x has a CVSS v3 base score of 7.6, published by GitHub Security Advisories.

Which products are affected by GHSA-cgc2-rcrh-qr5x?

GHSA-cgc2-rcrh-qr5x affects 1 product, including: npm/ghost:\u003e= 0.7.2, \u003c= 6.19.0.

GHSA-cgc2-rcrh-qr5xHighCVSS 7.6

Ghost Vulnerable to Remote Code Execution via Malicious Themes

Vendor

GitHub Security Advisories

Published

March 3, 2026

Last Modified

March 5, 2026

🔗 CVE IDs covered (1)

CVE-2026-29053 →

📋 Description

Impact

Specifically crafted malicious themes can execute arbitrary code on the server running Ghost.

Vulnerable Versions

This vulnerability is present in Ghost v0.7.2 to v6.19.0.

Patches

v6.19.1 contains a fix for this issue.

Workarounds

Ghost generally recommends users refrain from installing untrusted themes. If a malicious theme has already been installed, it is recommended to uninstall the theme and then inspect it to understand its impact, which will be attack-specific.

References

Ghost thanks Cristian-Alexandru Staicu at Endor Labs for disclosing this vulnerability responsibly.

For more information

If there are any questions or comments about this advisory, email Ghost at [email protected].

🎯 Affected products1

npm/ghost:>= 0.7.2, <= 6.19.0

🔗 References (3)

https://github.com/TryGhost/Ghost/security/advisories/GHSA-cgc2-rcrh-qr5x
https://nvd.nist.gov/vuln/detail/CVE-2026-29053
https://github.com/advisories/GHSA-cgc2-rcrh-qr5x