CVE-2023-22518

Name: CVE-2023-22518
Creator: NVD / NIST
Published: 2023-10-31T15:15:08.573+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 100.00%

Last modified Jun 17, 2026

CVE-2023-22518 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 100.00% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

100.00%

100.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Nov 28, 2023.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Atlassian	Confluence Data Center	>= 1.0, < 7.19.16
Atlassian	Confluence Data Center	>= 7.20.0, < 8.3.4
Atlassian	Confluence Data Center	>= 8.4.0, < 8.4.4
Atlassian	Confluence Data Center	>= 8.5.0, < 8.5.3
Atlassian	Confluence Data Center	8.6.0
Atlassian	Confluence Server	>= 1.0, < 7.19.16
Atlassian	Confluence Server	>= 7.20.0, < 8.3.4
Atlassian	Confluence Server	>= 8.4.0, < 8.4.4
Atlassian	Confluence Server	>= 8.5.0, < 8.5.3
Atlassian	Confluence Server	8.6.0

References

http://packetstormsecurity.com/files/176264/Atlassian-Confluence-Improper-Authorization-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://confluence.atlassian.com/pages/viewpage.action?pageId=1311473907Issue Tracking, Mitigation, Vendor Advisory
https://jira.atlassian.com/browse/CONFSERVER-93142Issue Tracking, Mitigation, Vendor Advisory
http://packetstormsecurity.com/files/176264/Atlassian-Confluence-Improper-Authorization-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://confluence.atlassian.com/pages/viewpage.action?pageId=1311473907Issue Tracking, Mitigation, Vendor Advisory
https://jira.atlassian.com/browse/CONFSERVER-93142Issue Tracking, Mitigation, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22518US Government Resource

Timeline

Published: Oct 31, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-22518?

How severe is CVE-2023-22518?

CVE-2023-22518 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 100.00% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2023-22518?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-22518?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST