CRITICAL🚩 CISA KEV⚡ EXPLOIT🇵🇱 Wersja polska

CVE-2023-22515

CVSS 9.8v3.1pub. 2023-10-04upd. 2026-03-25

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.

🇵🇱 Read Polish description →

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Atlassian Confluence Data Center
APP
Atlassian
8.0.0 – 8.3.3 (excl.)8.4.0 – 8.4.3 (excl.)8.5.0 – 8.5.2 (excl.)
Atlassian Confluence Server
APP
Atlassian
8.0.0 – 8.3.3 (excl.)8.4.0 – 8.4.3 (excl.)8.5.0 – 8.5.2 (excl.)

CISA KEV — detailsi

Vendori: Atlassian ↗
Producti: Confluence Data Center and Server
Added to KEVi: October 5, 2023
Remediation deadline (US Federal)i: October 13, 2023(overdue)
Ransomwarei: Active ransomware campaigns exploit this vulnerability

🔧Advisory Atlassian↗🇺🇸CISA KEV (original)↗

Required action (CISA)i

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 descriptioni

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.

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