Atlassian · Confluence Data Center and Server
CVE-2023-22518
Atlassian Confluence Data Center and Server Improper Authorization Vulnerability
What it is
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.
CISA: 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.
What to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Deadline for US federal agencies: November 28, 2023
More exploited flaws from Atlassian
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Jan 24, 2024 | Template Injection | Confluence Data Center and Server | Critical 10.0 | >99.9% |
| Oct 5, 2023 | Broken Access Control | Confluence Data Center and Server | Critical 10.0 | 99.2% |
| Oct 15, 2026 | Files or Directories Accessible to External Parties | Multiple Products | Critical 9.3 | 99.5% |
| Nov 12, 2024 | Path Traversal | Jira Server and Data Center | Medium 5.3 | >99.9% |
| Sep 30, 2022 | Command Injection | Bitbucket Server and Data Center | High 8.8 | 99.1% |
| Jul 29, 2022 | Questions For Confluence App Hard-coded Credentials | Confluence | Critical 9.8 | 98% |
| Jun 2, 2022 | Confluence Server and Data Center Remote Code Execution | Confluence Server/Data Center | Critical 9.8 | >99.9% |
| Mar 28, 2022 | Pre-Authorization Arbitrary File Read | Confluence Server | Medium 5.3 | 99.9% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.