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Findings

CVE-2023-22518

Atlassian Confluence Data Center and Server Improper Authorization Vulnerability

Published Oct 31, 2023 · updated Jun 16, 2026 · atlassian confluence data center

All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using this account, an attacker can then perform all administrative actions that are available to Confluence instance administrator leading to - but not limited to - full loss of confidentiality, integrity and availability. Atlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an atlassian.net domain, it is hosted by Atlassian and is not vulnerable to this issue.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 31, 2023 · Catalog

    Detected

    All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using this account, an attacker can then perform all administrative actions that are available to Confluence instance administrator leading to - but

  2. Nov 7, 2023 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  3. Nov 28, 2023 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  4. Jun 16, 2026 · Catalog

    Updated

    All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using this account, an attacker can then perform all administrative actions that are available to Confluence instance administrator leading to - but

Required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA due date Nov 28, 2023

Affected

  • cpe atlassian/confluence data centerversion unspecified
  • cpe atlassian/confluence data center8.6.0
  • cpe atlassian/confluence serverversion unspecified
  • vendor Atlassian Confluence Data Center and Serverversion unspecified

Sources

  • CISA KEVCVE-2023-22518

    Atlassian Confluence Data Center and Server contain an improper authorization vulnerability that can result in significant data loss when exploited by an unauthenticated attacker. There is no impact on confidentiality since the attacker cannot exfiltrate any data.

    cisa.gov
  • CVE.orgCVE-2023-22518

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2023-22518

    30-day exploitation probability 100.0%

    first.org
  • Metasploit Modulesexploit_multi/http/atlassian_confluence_unauth_backup

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDCVE-2023-22518

    All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using this account, an attack

    nvd.nist.gov
  • Packet Storm Securityhttp://packetstormsecurity.com/files/176264/Atlassian-Confluence-Improper-Authorization-Code-Execution.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References