CVEvulnerability

CVE-2023-22515

9.8 CRITICAL Known exploited Published 2023-10-04 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Atlassian Confluence Data Center and Server Broken Access Control Vulnerability — Atlassian Confluence Data Center and Server

Atlassian Confluence Data Center and Server contains a broken access control vulnerability that allows an attacker to create unauthorized Confluence administrator accounts and access Confluence.

Added to KEV
2023-10-05
Remediation due
2023-10-13
Ransomware use
Known
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA.
Notes
https://confluence.atlassian.com/security/cve-2023-22515-privilege-escalation-vulnerability-in-confluence-data-center-and-server-1295682276.html; https://nvd.nist.gov/vuln/detail/CVE-2023-22515
Status
Analyzed
Published
2023-10-04
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.0 ([email protected])
10.0 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-20

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.

Affected configurations

• atlassian confluence data center (>= 8.0.0 < 8.3.3) • atlassian confluence data center (>= 8.4.0 < 8.4.3) • atlassian confluence data center (>= 8.5.0 < 8.5.2) • atlassian confluence server (>= 8.0.0 < 8.3.3) • atlassian confluence server (>= 8.4.0 < 8.4.3) • atlassian confluence server (>= 8.5.0 < 8.5.2)

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References