HIGHCVSS 7.5EPSS 0.2%

CVE-2026-53950

CVE-2026-53950 updated by NVD

Published: 2026-08-04
Modified: 2026-10-27
EPSS percentile: 11%
Sources: github-advisory, nvd

Summary

@tryghost/activitypub is Ghost’s social/federation client app. Prior to 3.1.0, the ActivityPub client in Ghost was vulnerable to JavaScript injection on posts shared by a maliciously customised ActivityPub server. This vulnerability is fixed in 3.1.0.

Affected packages

Ecosystem	Package	Affected versions	Fixed versions
npm	@tryghost/activitypub	—	3.1.0

Remediation: Upgrade to 3.1.0 or later.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-53950

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.