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@tryghost/activitypub

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

Open advisories

1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. High, CVSS 7.5npmPublished

    XSS in Ghost's ActivityPub client

    CVE-2026-53950 · GHSA-xpp7-93x6-v29m

    Affected
    • npm @tryghost/activitypub < 3.1.0
    Fixed in
    3.1.0· Vendor fix available
    Issue
    Impact The ActivityPub client in Ghost was vulnerable to JavaScript injection on posts shared by a maliciously customised ActivityPub server. Vulnerable Versions This vulnerability is present in the @tryghost/activitypub package up to v3.0.8. All prior versions are also affected. Patches @tryghost/activitypub v3.1.0 contains a fix for this issue and is also automatically fetched by Ghost. References Ghost thanks Brad Geesaman, Ghost Security for disclosing this vulnerability responsibly. For more information If you have any questions or comments about this advisory, email Ghost at security@ghost.org.

    Recommended action: Upgrade to 3.1.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →