CVE-2023-22515 | Atlassian has been made aware of an issue reported by a hand… | CVSS 10.0 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.

Metadata

CVE ID: CVE-2023-22515
State: PUBLISHED
Assigner: atlassian
Reserved: 2023-01-01 00:01 UTC
Published: 2023-10-04 14:00 UTC
Last updated: 2026-03-25 14:56 UTC
Primary CWE: CWE-20
CWE-20 Improper Input Validation
Vendor / Product: Atlassian / Confluence Data Center
Sources: cve.org · NVD

Severity & Metrics

10.0 CRITICAL CVSS 3.0

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

SSVC — CISA Coordinator

Exploitation: ACTIVE
Automatable: yes
Tech. Impact: total

CISA Known Exploited Vulnerability

Vulnerability name: Atlassian Confluence Data Center and Server Broken Access Control Vulnerability
Vendor: Atlassian
Product: Confluence Data Center and Server
Added to KEV: 2023-10-05
Due date: 2023-10-13
Ransomware: Known use

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.

CISA description

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.

Affected products (2)

Vendor	Product	Platform	Versions
Atlassian	Confluence Data Center	—	< 8.0.0, >= 8.0.0, >= 8.0.1, >= 8.0.2 …
Atlassian	Confluence Server	—	< 8.0.0, >= 8.0.0, >= 8.0.1, >= 8.0.2 …

Weakness (CWE)

CWE	Source	Description
—	cna	BASM (Broken Authentication & Session Management)
CWE-20	adp	CWE-20 Improper Input Validation

CVSS scores (1)

Score	Severity	Version	Source	Vector
10.0	CRITICAL	3.0	cna	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References (4)