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

- Exploited (CISA KEV): yes, added 2023-10-05, known ransomware use
- Published: 2023-10-04
- CVSS: 10 CRITICAL (v3.0)
- EPSS: 99.2% (100th percentile)

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.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Before feed history | — | — |
| AWS | Rule published | 2023-10-04 | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | Before feed history | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2023-12-12 | 69 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### AWS

- 2023-10-04 · updated
  > Known bad inputs managed rule group ExploitablePaths_URIPATH: Exception deployment: released static version 1.19 of this rule group. Updated the default version to use version 1.19. Updated the ExploitablePaths_URIPATH rule to add detection for requests matching the Atlassian Confluence CVE-2023-22515 Privilege Escalation Vulnerability. This vulnerability affects some versions of Atlassian Confluence. For more information, see NIST: National Vulnerability Database: CVE-2023-22515 Detail and Atl…
  Source: https://docs.aws.amazon.com/waf/latest/developerguide/aws-managed-rule-groups-changelog.html

### F5

- 2023-12-12 · new · rule 200013063
  > Added: signature 200013063 "Atlassian Confluence Privilege Escalation (2)" (Authentication/Authorization Attacks, risk High), systems: Java Servlets/JSP. References: CVE-2023-22515, CVE-2023-22518.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog
- 2023-12-12 · new · rule 200013064
  > Added: signature 200013064 "Atlassian Confluence Privilege Escalation (1)" (Authentication/Authorization Attacks, risk High), systems: Java Servlets/JSP. References: CVE-2023-22515.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: passed (0 of 6 requests blocked), template CVE-2023-22515, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: passed (0 of 6 requests blocked), template CVE-2023-22515, 2026-11-02

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2023-22515 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2023-22515