---
title: "CVE-2023-22515: Atlassian Confluence Data Center and Server Broken Access Control Vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-22515/
description: "CVE-2023-22515 (Atlassian Confluence Data Center and Server): Exploited in the wild (CISA KEV). Atlassian has been made aware of an issue reported by a…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-10-04
date_modified: 2026-03-25
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-22515"
kev: true
cvss: 10
epss: 0.99223
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-22515: Atlassian Confluence Data Center and Server Broken Access Control Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Atlassian Confluence Data Center and Server. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2023-10-05, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2023-10-13 ; treat that as the outer limit, not the target. CISA also lists it as known to be used in ransomware campaigns .
- EPSS 99.2% , percentile 99.9: FIRST’s model estimates a 99.2% chance of exploitation activity in the next 30 days, higher than 99.9% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

Atlassian has been made aware of an issue reported by a handful of customers where external attackers may have exploited a previously unknown vulnerability in publicly accessible Confluence Data Center and Server instances to create unauthorized Confluence administrator accounts and access Confluence instances. Atlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an atlassian.net domain, it is hosted by Atlassian and is not vulnerable to this issue.

## Affected products (CVE record)

- Atlassian Confluence Data Center: >= 8.0.0, >= 8.0.1, >= 8.0.2, >= 8.0.3, >= 8.1.3, >= 8.1.4, >= 8.2.0, >= 8.2.1, >= 8.2.2, >= 8.2.3, >= 8.3.0, >= 8.3.1
- Atlassian Confluence Server: >= 8.0.0, >= 8.0.1, >= 8.0.2, >= 8.0.3, >= 8.1.3, >= 8.1.4, >= 8.2.0, >= 8.2.1, >= 8.2.2, >= 8.2.3, >= 8.3.0, >= 8.3.1

## Severity

- atlassian CVSS 3.0: 10 `CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2023-10-05; federal due date 2023-10-13. Known ransomware use: Known.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 99.22% probability of exploitation activity in the next 30 days; percentile 99.9.

## Sources

- [Listed in CISA KEV notes (confluence.atlassian.com)](https://confluence.atlassian.com/security/cve-2023-22515-privilege-escalation-vulnerability-in-confluence-data-center-and-server-1295682276.html)
- [CVE.org record CVE-2023-22515](https://www.cve.org/CVERecord?id=CVE-2023-22515)
- [NVD entry CVE-2023-22515](https://nvd.nist.gov/vuln/detail/CVE-2023-22515)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22515)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/175225/Atlassian-Confluence-Unauthenticated-Remote-Code-Execution.html)
- [confluence.atlassian.com](https://confluence.atlassian.com/display/KB/FAQ+for+CVE-2023-22515)
- [confluence.atlassian.com](https://confluence.atlassian.com/pages/viewpage.action?pageId=1295682276)
- [jira.atlassian.com](https://jira.atlassian.com/browse/CONFSERVER-92475)

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Source page: https://erroneo.us/security/cve/CVE-2023-22515/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt