Is CVE-2023-22527 actively exploited?

Yes. KEV Intelligence tracks CVE-2023-22527 as a known exploited vulnerability. Confidence is confirmed.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2023-22527. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2023-22527 affects Atlassian Confluence Data Center, Confluence Server. KEV Intelligence lists 27 version rows; examples include 8.0.0 to < 8.5.4 and < 8.0.0.

Yes. CVE-2023-22527 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2023-22527

Q: How should organizations remediate it?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Q: Is it in CISA KEV?

Yes. CVE-2023-22527 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Confluence Data Center Remote Code Execution

Atlassian / Confluence Data Center · affected before 8.5.4

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Severity: CVSS 9.8 · Critical
Confidence: Confirmed
Exploit status: Exploited in the wild
EPSS: 100.0%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2023-22527 is an unauthenticated vulnerability affecting Atlassian Confluence Data Center, Confluence Server. A template injection vulnerability on older versions of Confluence Data Center and Server allows an...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.

Who is affected?

Atlassian / Confluence Data Center affected before 8.5.4.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Confluence Data Center Remote Code Execution

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.

Vendor Product Affected Status

atlassian confluence_data_center Before 8.5.4 Affected

atlassian confluence_server Before 8.5.4 Affected

Atlassian Confluence Data Center Before 8.0.0 Unaffected

Atlassian Confluence Data Center >= 8.0.0 Affected

Atlassian Confluence Data Center >= 8.1.0 Affected

Atlassian Confluence Data Center >= 8.2.0 Affected

Atlassian Confluence Data Center >= 8.3.0 Affected

Atlassian Confluence Data Center >= 8.4.0 Affected

Atlassian Confluence Data Center >= 8.5.0 Affected

Atlassian Confluence Data Center >= 8.5.1 Affected

Atlassian Confluence Data Center >= 8.5.2 Affected

Atlassian Confluence Data Center >= 8.5.3 Affected

Atlassian Confluence Data Center >= 8.5.4 Unaffected

Atlassian Confluence Data Center >= 8.6.0 Unaffected

Atlassian Confluence Data Center >= 8.7.1 Unaffected

Atlassian Confluence Server Before 8.0.0 Unaffected

Atlassian Confluence Server >= 8.0.0 Affected

Atlassian Confluence Server >= 8.1.0 Affected

Atlassian Confluence Server >= 8.2.0 Affected

Atlassian Confluence Server >= 8.3.0 Affected

Atlassian Confluence Server >= 8.4.0 Affected

Atlassian Confluence Server >= 8.5.0 Affected

Atlassian Confluence Server >= 8.5.1 Affected

Atlassian Confluence Server >= 8.5.2 Affected

Atlassian Confluence Server >= 8.5.3 Affected

Published: 16 Jan 2024
Exploitation Reported: 24 Jan 2024
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2023-22527
confluence.atlassian.com/pages/viewpage.action confluence.atlassian.com · CVE Record https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615
jira.atlassian.com/browse/CONFSERVER-93833 jira.atlassian.com · CVE Record https://jira.atlassian.com/browse/CONFSERVER-93833
packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injec... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI...

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 24 Jan 2024

Independent exploitation attestation added to the KEV Intelligence record.

Used in malware

CISA

Recorded 24 Jan 2024

Malware families have been linked to exploitation of this CVE.

Proof of concept available

GitHub

Recorded 16 Jan 2024

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source	Added
CISA First	2024-01-24 00:00 UTC
The Shadowserver	2026-06-01 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

Metasploit template detected 28 Apr 2025.

View Metasploit template

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

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Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner	Reference	Detected
Metasploit	https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/atlassian_confluence_rce_cve_2023_22527.rb	28 Apr 2025
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-22527.yaml	25 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.8 Critical

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

EPSS

100.0%

Weaknesses

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-74

All CVSS Scores

CVSS v3.1 9.8 Critical

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

CVSS v3.0 10.0 Critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Atlassian Confluence - Remote Code Execution

nuclei · Created Unknown

atlassian_confluence_rce_cve_2023_22527

metasploit · Created Unknown

Metasploit module for CVE-2023-22527

Timeline

From disclosure to observed exploitation

01 Jun 2026
KEV confirmed by The Shadowserver

Exploitation attested by an external source
28 Apr 2025
Metasploit module available

Exploit module available
28 Apr 2025
Public PoC available

Public proof-of-concept code published
25 Apr 2025
Nuclei template available

Scanner coverage available
24 Jan 2024
Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
24 Jan 2024
First public exploitation report

Exploit observed in malware
16 Jan 2024
CVE published

Vulnerability disclosed publicly
01 Jan 2023
CVE ID reserved

Identifier reserved by the CNA

Pro API

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Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2023-22527

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2023-22527",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.99984,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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CVE-2023-22527

Confluence Data Center Remote Code Execution

Tags

CVE References

Exploited in the wild

Used in malware

Proof of concept available

Known exploited vulnerability sources

Observed signals

Scanner coverage

Virtual patch status

Scanner Artifacts

Weaknesses

All CVSS Scores

Potential Proof of Concepts

KEV confirmed by The Shadowserver

Metasploit module available

Public PoC available

Nuclei template available

Added to CISA KEV

First public exploitation report

CVE published

CVE ID reserved

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