CVE Explorer
CVE-2026-53950
@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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"Ghost","vendor":"TryGhost","versions":[{"status":"affected","version":"< 3.1.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:96410047030f1cd99922c7b44b0613c561ca5048e8dbe4a66bf5d6cce5a09f07 · sha256:6e3772e88c2e8f3d… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:96410047030f1cd99922c7b44b0613c561ca5048e8dbe4a66bf5d6cce5a09f07 · sha256:6e3772e88c2e8f3d… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:96410047030f1cd99922c7b44b0613c561ca5048e8dbe4a66bf5d6cce5a09f07 · sha256:6e3772e88c2e8f3d… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-xpp7-93x6-v29m","tags":["x_refsource_CONFIRM"],"url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-xpp7-93x6-v29m"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:96410047030f1cd99922c7b44b0613c561ca5048e8dbe4a66bf5d6cce5a09f07 · sha256:6e3772e88c2e8f3d… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.