CVE-2023-22515

critical

Description

Atlassian has been made aware of an issue reported by a handful of customers where external attackers may have exploited a previously unknown vulnerability in publicly accessible Confluence Data Center and Server instances to create unauthorized Confluence administrator accounts and access Confluence instances. 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.

From the Tenable Blog

CVE-2023-22515: Zero-Day Vulnerability in Atlassian Confluence Data Center and Server Exploited in the Wild

Published: 2023-10-04

A critical zero-day vulnerability in Atlassian Confluence Data Center and Server has been exploited in the wild in a limited number of cases. Organizations should patch or apply the mitigation steps as soon as possible.

References

https://www.security.com/threat-intelligence/ransomware-trends-2025

https://www.securityweek.com/citrix-cisco-fortinet-zero-days-among-2023s-most-exploited-vulnerabilities/

https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-317a

https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-242a

https://www.greynoise.io/blog/spike-in-atlassian-exploitation-attempts-patching-is-crucial

https://thehackernews.com/2023/11/alert-effluence-backdoor-persists.html?&web_view=true

https://confluence.atlassian.com/security/cve-2023-22515-privilege-escalation-vulnerability-in-confluence-data-center-and-server-1295682276.html

https://www.securityweek.com/microsoft-blames-nation-state-threat-actor-for-confluence-zero-day-attacks/

https://www.tenable.com/blog/cve-2023-22527-atlassian-confluence-data-center-and-server-template-injection-exploited-in-the

https://www.tenable.com/blog/cve-2023-22518-critical-atlassian-confluence-data-center-and-server-improper-authorization

https://www.tenable.com/blog/cve-2023-22515-zero-day-vulnerability-in-atlassian-confluence-data-center-and-server-exploited

https://jira.atlassian.com/browse/CONFSERVER-92475

https://confluence.atlassian.com/pages/viewpage.action?pageId=1295682276

https://confluence.atlassian.com/display/KB/FAQ+for+CVE-2023-22515

http://packetstormsecurity.com/files/175225/Atlassian-Confluence-Unauthenticated-Remote-Code-Execution.html

Details

Source: Mitre, NVD

Published: 2023-10-04

Updated: 2025-02-09

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.94365

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability of Interest

Detections

Analytics