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01 Record

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

CriticalKEVPUBLISHEDCNA: atlassian
CNA base score10.0 CVSS v3.xCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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02 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

03 Exploitation and scoring

Exploitation
Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2024-01-24. Federal remediation due 2024-02-14. Known ransomware campaign use: reported by CISA.
SSVC decision
  • ExploitationactiveCISA reports credible evidence of active exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
99.98% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 99.9% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-01-16 05:00Z2 YR AGO
Last updated
2025-10-21 23:05Z1 YR AGO
Reserved
2023-01-01
Assigning CNA
atlassian
Record state
PUBLISHED
Severity
Critical (CVSS 10.0)
CNA CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
  • CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class
Data version
5.1
Document digest
fb2ae01514465b8dfc427a4ada57f6c259b4258343faf7f43d0d6925620b5a45

05 Affected products

VendorProductVersionsPlatforms
AtlassianConfluence Data Center>= 8.0.0, >= 8.1.0, >= 8.2.0, >= 8.3.0, >= 8.4.0, >= 8.5.0, >= 8.5.1, >= 8.5.2, >= 8.5.3—
AtlassianConfluence Server>= 8.0.0, >= 8.1.0, >= 8.2.0, >= 8.3.0, >= 8.4.0, >= 8.5.0, >= 8.5.1, >= 8.5.2, >= 8.5.3—
atlassianconfluence_data_center8.0.0 to < 8.5.4—
atlassianconfluence_server8.0.0 to < 8.5.4—

06 References