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GHSA-cgc2-rcrh-qr5x

Ghost Vulnerable to Remote Code Execution via Malicious Themes

Source: GitHub Advisory Database (reviewed) High CVE-2026-29053

Packages

EcosystemPackageAffectedFixed in
npm ghost >= 0.7.2, < 6.19.1 6.19.1

Details

As written in the advisory (Markdown source, shown as plain text).

### 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]](mailto:[email protected]).

References

External links from the advisory. They lead to third-party sites.