{
  "id": "CVE-2023-22527",
  "url": "https://spydr.io/cve/CVE-2023-22527",
  "published": "2024-01-16T05:15:08.290Z",
  "modified": "2026-06-17T05:35:38.480Z",
  "score": 9.8,
  "severity": "critical",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "NVD",
  "epss": 0.99984,
  "epss_percentile": 0.99982,
  "exploited": true,
  "kev": {
    "added": "2024-01-24",
    "due": "2024-02-14",
    "action": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
    "ransomware": "Known",
    "name": "Atlassian Confluence Data Center and Server Template Injection Vulnerability",
    "notes": "https://confluence.atlassian.com/security/cve-2023-22527-rce-remote-code-execution-vulnerability-in-confluence-data-center-and-confluence-server-1333990257.html; https://nvd.nist.gov/vuln/detail/CVE-2023-22527"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Atlassian"
  ],
  "products": [
    "Atlassian Confluence Data Center",
    "Atlassian Confluence Server"
  ],
  "cwes": [
    "CWE-74"
  ],
  "description": "A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action. Most recent supported versions of Confluence Data Center and Server are not affected by this vulnerability as it was ultimately mitigated during regular version updates. However, Atlassian recommends that customers take care to install the latest version to protect their instances from non-critical vulnerabilities outlined in Atlassian’s January Security Bulletin.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 9.8,
    "cvss_v30": 10
  },
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.html",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://jira.atlassian.com/browse/CONFSERVER-93833",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.vicarius.io/vsociety/posts/pwning-confluence-via-ognl-injection-for-fun-and-learning-cve-2023-22527",
      "tags": [
        "Exploit"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22527",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2023-22527",
  "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."
    }
  ]
}