CVE-2023-22527

CriticalActively exploited (CISA KEV)Known to be used in ransomware campaigns

Description

A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action. Most recent supported versions of Confluence Data Center and Server are not affected by this vulnerability as it was ultimately mitigated during regular version updates. However, Atlassian recommends that customers take care to install the latest version to protect their instances from non-critical vulnerabilities outlined in Atlassian’s January Security Bulletin.

SeverityCritical
CVSS9.8
Exploit probability—
ProductAtlassian Confluence Data Center and Server
PublishedJan 16, 2024
First seenJan 16, 2024
Added to KEVJan 24, 2024
Weakness typeCWE-74Injection

How to fix

CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA due date: Feb 14, 2024
Update
  • atlassian confluence_data_center8.5.4 or later
  • atlassian confluence_server8.5.4 or later

Affected products

ProductAffected versionsFixed in
atlassian confluence_data_center8.0.0 ≤ v < 8.5.4, 8.7.08.5.4
atlassian confluence_server8.0.0 ≤ v < 8.5.48.5.4

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