BIT-ghost-2026-53950

vendorUSosv

@tryghost/activitypub: XSS in Ghost's ActivityPub client

view advisory published 2026-06-30Licence: per source

@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.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-53950US	—	0.35% (29th)	—	2026-06-24
@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 malicious…

references

External citations — patches, advisories, analysis.

https://github.com/TryGhost/Ghost/security/advisories/GHSA-xpp7-93x6-v29mWEB
https://nvd.nist.gov/vuln/detail/CVE-2026-53950WEB

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