GHSA-XPP7-93X6-V29M高危已审查

XSS in Ghost's ActivityPub client

OSV 1.4.0 · github-reviewed · 修改于 2026-08-05 05:54

发布时间

2026-08-05 05:54

GitHub 审查时间

2026-08-05 05:54

NVD 发布时间

2026-06-25 03:17

源文件

advisories/github-reviewed/2026/08/GHSA-xpp7-93x6-v29m/GHSA-xpp7-93x6-v29m.json

公告说明

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 [email protected].

受影响的软件包

npm

@tryghost/activitypub

ECOSYSTEM

标识信息

别名 / CVE

CVE-2026-53950

CWE

CWE-79

软件生态

npm

扩展资料

暂无扩展资料。

CVSS 评分

CVSS_V3

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

原始 OSV JSON

{
  "id": "GHSA-xpp7-93x6-v29m",
  "aliases": [
    "CVE-2026-53950"
  ],
  "details": "### Impact\n\nThe ActivityPub client in Ghost was vulnerable to JavaScript injection on posts shared by a maliciously customised ActivityPub server.\n\n### Vulnerable Versions\n\nThis vulnerability is present in the @tryghost/activitypub package up to v3.0.8. All prior versions are also affected. \n\n### Patches\n\n@tryghost/activitypub v3.1.0 contains a fix for this issue and is also automatically fetched by Ghost.\n\n### References\n\nGhost thanks Brad Geesaman, Ghost Security for disclosing this vulnerability responsibly. \n\n### For more information\n\nIf you have any questions or comments about this advisory, email Ghost at [[email protected]](mailto:[email protected]).",
  "summary": "XSS in Ghost's ActivityPub client",
  "affected": [
    {
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.0"
            }
          ]
        }
      ],
      "package": {
        "name": "@tryghost/activitypub",
        "ecosystem": "npm"
      }
    }
  ],
  "modified": "2026-08-04T21:54:01Z",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
    }
  ],
  "published": "2026-08-04T21:54:01Z",
  "references": [
    {
      "url": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-xpp7-93x6-v29m",
      "type": "WEB"
    },
    {
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53950",
      "type": "ADVISORY"
    },
    {
      "url": "https://github.com/TryGhost/Ghost",
      "type": "PACKAGE"
    }
  ],
  "schema_version": "1.4.0",
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "nvd_published_at": "2026-06-24T19:17:12Z",
    "github_reviewed_at": "2026-08-04T21:54:01Z"
  }
}