$ cve CVE-2023-22518 JSON

CVE-2023-22518 KEV

9.8

CRITICAL · CVSS 3.1 · EPSS 100% (pctl 100)

Patch first

On CISA KEV — known exploited in the wild, due 2023-11-28.

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.

Scoring

CVSS	9.8 (CRITICAL, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS	100% — more likely to be exploited than 100% of all CVEs
Weakness	CWE-863
On CISA KEV	yes — remediate by 2023-11-28
Public exploit	none known
Published	2023-10-31
Last modified	2026-06-17

CISA KEV

Name	Atlassian Confluence Data Center and Server Improper Authorization Vulnerability
Added	2023-11-07
Due	2023-11-28
Vendor / product	Atlassian / Confluence Data Center and Server
Ransomware use	known

Affected (2)

Vendor	Product
atlassian	confluence data center
atlassian	confluence server

References

→ the Explorer · watch your stack · NVD