CVE-2023-22518
9.8, critical Known exploited Used in ransomwareAtlassian Confluence Data Center and Server Improper Authorization Vulnerability
- CVSS
- 9.8, critical critical CVSS v3.1
- EPSS, next 30 days
- 100% higher than 99.9% of scored CVEs
- Exploitation
- Confirmed in the wild
- Published
- 31 Oct 20232 years ago
Known exploited
CISA added this to the Known Exploited Vulnerabilities Catalog on 7 Nov 2023 and links it to ransomware activity. US federal agencies had to remediate by 28 Nov 2023, a deadline that has passed.
Required action. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Description
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.
Details
- Vendor
- Atlassian
- Product
- Confluence Data Center
- Weakness
- CWE-863 (opens in a new tab)
- Status
- Analyzed
- Updated
- 17 Jun 2026
- Assigner
- security@atlassian.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References 4
Exploit code 1
Advisories 2
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other Atlassian CVEs
Every Atlassian CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2026-21589 Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability KEV EPSS 13% 7.5, high
- CVE-2023-22527 Atlassian Confluence Data Center and Server Template Injection Vulnerability KEV EPSS 100% 9.8, critical
- CVE-2023-22515 Atlassian Confluence Data Center and Server Broken Access Control Vulnerability KEV EPSS 99% 9.8, critical
- CVE-2022-36804 Atlassian Bitbucket Server and Data Center Command Injection Vulnerability KEV EPSS 99% 8.8, high
- CVE-2022-26138 Atlassian Questions For Confluence App Hard-coded Credentials Vulnerability KEV EPSS 98% 9.8, critical
- CVE-2022-26134 Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability KEV EPSS 100% 9.8, critical
- CVE-2021-26084 Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability KEV EPSS 100% 9.8, critical
- CVE-2021-26086 Atlassian Jira Server and Data Center Path Traversal Vulnerability KEV EPSS 100% 5.3, medium
Beyond this page
Is CVE-2023-22518 in your network?
This page tells you how dangerous CVE-2023-22518 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.
CVE-2023-22518 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.
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EXYS7600 OCELOT
Find it before attackers do
Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2023-22518 comes with the devices to patch.
Learn more about EXYS7600 OCELOT -
EXYS7950 KONDRA
Detect it if it's exploited
Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.
Learn more about EXYS7950 KONDRA
Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.