CVEvulnerability

CVE-2023-22518

9.8 CRITICAL Known exploited Published 2023-10-31 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Atlassian Confluence Data Center and Server Improper Authorization Vulnerability — Atlassian Confluence Data Center and Server

Atlassian Confluence Data Center and Server contain an improper authorization vulnerability that can result in significant data loss when exploited by an unauthenticated attacker. There is no impact on confidentiality since the attacker cannot exfiltrate any data.

Added to KEV
2023-11-07
Remediation due
2023-11-28
Ransomware use
Known
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes
https://confluence.atlassian.com/security/cve-2023-22518-improper-authorization-vulnerability-in-confluence-data-center-and-server-1311473907.html; https://nvd.nist.gov/vuln/detail/CVE-2023-22518
Status
Analyzed
Published
2023-10-31
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-863

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.

Affected configurations

• 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

Related

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References