{
  "id": "CVE-2021-26085",
  "url": "https://spydr.io/cve/CVE-2021-26085",
  "published": "2021-08-03T00:15:08.557Z",
  "modified": "2026-06-17T03:42:49.933Z",
  "score": 5.3,
  "severity": "medium",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
  "score_source": "NVD",
  "epss": 0.99937,
  "epss_percentile": 0.99971,
  "exploited": true,
  "kev": {
    "added": "2022-03-28",
    "due": "2022-04-18",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Known",
    "name": "Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability",
    "notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-26085"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Atlassian"
  ],
  "products": [
    "Atlassian Confluence Server",
    "Atlassian Confluence Data Center"
  ],
  "cwes": [
    "CWE-425"
  ],
  "description": "Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 5.3,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://jira.atlassian.com/browse/CONFSERVER-67893",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26085",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}