fkie_cve-2025-62605
Vulnerability from fkie_nvd
Published
2025-10-21 17:15
Modified
2025-10-21 19:31
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Summary
Mastodon is a free, open-source social network server based on ActivityPub. In Mastodon version 4.4, support for verifiable quote posts with quote controls was added, but it is possible for an attacker to bypass these controls in Mastodon versions prior to 4.4.8 and 4.5.0-beta.2. Mastodon internally treats reblogs as statuses. Since they were not special-treated, an attacker could reblog any post, then quote their reblog, technically quoting themselves, but having the quote feature a preview of the post they did not get authorization for with all of the affordances that would be otherwise denied by the quote controls. This issue has been patched in versions 4.4.8 and 4.5.0-beta.2.
References
security-advisories@github.comhttps://github.com/mastodon/mastodon/commit/2dc4552229b55e2e4adaef675e68ed7ae123d78e
security-advisories@github.comhttps://github.com/mastodon/mastodon/commit/405a49df44033e7d179f3d44d59fb68a67d54789
security-advisories@github.comhttps://github.com/mastodon/mastodon/releases/tag/v4.4.8
security-advisories@github.comhttps://github.com/mastodon/mastodon/releases/tag/v4.5.0-beta.2
security-advisories@github.comhttps://github.com/mastodon/mastodon/security/advisories/GHSA-8h43-rcqj-wpc6
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mastodon is a free, open-source social network server based on ActivityPub. In Mastodon version 4.4, support for verifiable quote posts with quote controls was added, but it is possible for an attacker to bypass these controls in Mastodon versions prior to 4.4.8 and 4.5.0-beta.2. Mastodon internally treats reblogs as statuses. Since they were not special-treated, an attacker could reblog any post, then quote their reblog, technically quoting themselves, but having the quote feature a preview of the post they did not get authorization for with all of the affordances that would be otherwise denied by the quote controls. This issue has been patched in versions 4.4.8 and 4.5.0-beta.2."
    }
  ],
  "id": "CVE-2025-62605",
  "lastModified": "2025-10-21T19:31:25.450",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-10-21T17:15:41.203",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/commit/2dc4552229b55e2e4adaef675e68ed7ae123d78e"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/commit/405a49df44033e7d179f3d44d59fb68a67d54789"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.4.8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.5.0-beta.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-8h43-rcqj-wpc6"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-754"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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