# Atlassian Confluence Data Center and Server Template Injection · pwn.watch

> Atlassian Confluence Data Center and Server contain an unauthenticated OGNL template injection vulnerability that can lead to remote code execution. Added to the CISA KEV catalog on 2024-01-24. CISA lists known use in ransomware campaigns. CVE-2023-22527 was assigned before 2024; the KEV listing came in 2024.

Page: https://pwn.watch/i/atlassian-confluence-data-center-and-server-cve-2023-22527 · generated 2026-10-22T19:29:07.289Z

## Status
- Severity: critical · status: closed · patch: patched
- Product: Atlassian Confluence Data Center and Server
- Started: 2024-01-16 · closed: 2024-01-24
- CVEs: CVE-2023-22527
- Affected: See vendor advisory (versions are not listed in the KEV record)
- Fixed in: See vendor advisory linked in sources

## Follow this incident
- RSS (one item per update): https://pwn.watch/i/atlassian-confluence-data-center-and-server-cve-2023-22527/feed.xml
- JSON Feed: https://pwn.watch/i/atlassian-confluence-data-center-and-server-cve-2023-22527/feed.json
- Full data (timeline, sources, posts, agentBrief): https://pwn.watch/i/atlassian-confluence-data-center-and-server-cve-2023-22527.json
- This file: https://pwn.watch/i/atlassian-confluence-data-center-and-server-cve-2023-22527/llms.txt

## Updates (newest first)
- 2024-01-24: CISA added CVE-2023-22527 to the KEV catalog (federal deadline 2024-02-14) (https://www.cisa.gov/known-exploited-vulnerabilities-catalog)
- 2024-01-16: CVE-2023-22527 published (https://nvd.nist.gov/vuln/detail/CVE-2023-22527)

## Fix brief
# Security brief: Atlassian Confluence Data Center and Server Template Injection

Source: https://pwn.watch/i/atlassian-confluence-data-center-and-server-cve-2023-22527 · status: closed (closed Jan 24, 2024) · severity: critical · updated Jan 24, 2024

## Patch status
**PATCHED: fixed releases exist. Upgrade to a fixed version.**

## What it is
Atlassian Confluence Data Center and Server contain an unauthenticated OGNL template injection vulnerability that can lead to remote code execution. Added to the CISA KEV catalog on 2024-01-24. CISA lists known use in ransomware campaigns. CVE-2023-22527 was assigned before 2024; the KEV listing came in 2024.

Severity detail: CVSS 10 (v3.0, CNA), actively exploited (CISA KEV); known ransomware use

- Product: Atlassian Confluence Data Center and Server
- CVE / advisory ids: CVE-2023-22527

## Affected versions
- See vendor advisory (versions are not listed in the KEV record)

## Check whether you're affected
No generic command applies (the product is a hosted service, appliance or desktop app). Check the installed version in its admin UI / About screen and compare with the versions above.

## Fix
Upgrade to one of these fixed versions (or later on the same branch):
- See vendor advisory linked in sources

After upgrading, re-run the checks above and redeploy/restart the affected services.

## Latest updates
- Jan 24, 2024: CISA added CVE-2023-22527 to the KEV catalog (federal deadline 2024-02-14)
- Jan 16, 2024: CVE-2023-22527 published

## Advisories
- [Atlassian advisory: CVE-2023-22527](https://confluence.atlassian.com/security/cve-2023-22527-rce-remote-code-execution-vulnerability-in-confluence-data-center-and-confluence-server-1333990257.html) (Atlassian)
- [NVD: CVE-2023-22527](https://nvd.nist.gov/vuln/detail/CVE-2023-22527) (NVD)
- [CISA Known Exploited Vulnerabilities Catalog](https://www.cisa.gov/known-exploited-vulnerabilities-catalog) (CISA)

## Caveats
Derived from the CISA KEV JSON feed (catalogVersion 2026.10.21); CVSS from the CVE record (cveawg.mitre.org). startedAt is the CVE publication date when it fell in 2024 before the KEV listing, else the KEV dateAdded; exploitation may have begun earlier. closedAt is the KEV listing date (a fix or mitigation was available then unless noted).

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Machine-readable: https://pwn.watch/i/atlassian-confluence-data-center-and-server-cve-2023-22527.json · all incidents: https://pwn.watch/incidents.json. Verify against the vendor advisory before changing production systems.