Is CVE-2023-22527 in the CISA KEV catalog?

Yes. CVE-2023-22527 is on the CISA Known Exploited Vulnerabilities list, added 2024-01-24, and has known ransomware campaign use.

What is the CVSS severity of CVE-2023-22527?

CVE-2023-22527 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-22527?

CVE-2023-22527 has an EPSS score of 99.98% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-22527?

Upgrade confluence data center to 8.5.4 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2023-22527

CRITICALCISA KEVEPSS 100th pctl

9.8

CVSS v3

NVD

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.

CWE-74Injection

How to fix

Remediation Available

confluence data centerNVD

Affected:>= 8.0.0, < 8.5.4Fixed in:8.5.4CVE-2023-22527derived from NVD

confluence serverNVD

Affected:>= 8.0.0, < 8.5.4Fixed in:8.5.4CVE-2023-22527derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

99.98%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Atlassian Confluence Data Center and Server Template Injection Vulnerability

Atlassian Confluence Data Center and Server contain an unauthenticated OGNL template injection vulnerability that can lead to remote code execution.

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

Remediation due: 2024-02-14

Associated with ransomware campaigns

References

Exploit2

Vendor Advisory2

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2251	Critical	9.8	100%	KEV	Fix
CVE-2019-2725	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2022-35914	Critical	9.8	100%	KEV	-
CVE-2019-17558	High	7.5	99%	KEV	Fix
CVE-2021-44832	Medium	6.6	98%	-	Fix

Embed a live status badge for CVE-2023-22527

Markdown

[![CVE-2023-22527](https://tridentstack.com/cve/badge/CVE-2023-22527.svg)](https://tridentstack.com/cve/CVE-2023-22527)

HTML

<a href="https://tridentstack.com/cve/CVE-2023-22527"><img src="https://tridentstack.com/cve/badge/CVE-2023-22527.svg" alt="CVE-2023-22527"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-24.