Vulnerability in Atlassian Confluence Data Center

CVE-2023-22527

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 rece…

EPSS: 0.944 (100.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

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

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-22527?
CVE-2023-22527 is a critical-severity vulnerability in Atlassian Confluence Data Center. CVSS score: 10.0/10. Published 2024-01-16.
How severe is CVE-2023-22527?
Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2023-22527 known to be exploited?
Yes. CVE-2023-22527 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-01-24), indicating it is being actively exploited. 102 public proof-of-concept repositories are indexed.