CVE-2026-21579

This High severity Information Disclosure vulnerability was introduced in versions 7.17.0, 7.19.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This Information Disclosure vulnerability, with a CVSS Score of 8.2, allows an unauthenticated attacker to vi...

EUVD-2026-46327

This High severity DoS Denial of Service vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0 and 10.2.0 of Confluence Data Center. This DoS Denial of Service vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to cause a resource...

CVE-2026-21577

This High severity DoS Denial of Service vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0 and 10.2.0 of Confluence Data Center. This DoS Denial of Service vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to cause a resource...

CVE-2026-21579

CVE-2026-21579 affects Atlassian Confluence Data Center and is a High severity information disclosure vulnerability. It was introduced in multiple releases (7.17.0, 7.19.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 10.0.2, 10.1.0, 10.2.0). An unauthenticated attacker could view sensitive information via...

CVE-2026-21577

This CVE affects Confluence Data Center, introduced in versions 9.0.1–10.2.0. It is a High severity DoS (CVSS 7.1) that an authenticated attacker can use to make a resource unavailable by disrupting network-connected services. Upgrades are recommended: move to Confluence Data Center 9.2.17 or new...

PT-2026-61999

This High severity DoS Denial of Service vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0 and 10.2.0 of Confluence Data Center. This DoS Denial of Service vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to cause a resource...

CVE-2026-21577: Uncontrolled Resource Consumption

This High severity DoS Denial of Service vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0 and 10.2.0 of Confluence Data Center. This DoS Denial of Service vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to cause a resource...

PT-2026-62000

Name of the Vulnerable Software and Affected Versions Confluence Data Center versions 7.17.0 Confluence Data Center version 7.19.0 Confluence Data Center version 8.5.0 Confluence Data Center version 8.9.0 Confluence Data Center version 9.0.1 Confluence Data Center version 9.1.0 Confluence Data...

CVE-2026-21579: Exposure of Sensitive Information to an Unauthorized Actor

This High severity Information Disclosure vulnerability was introduced in versions 7.17.0, 7.19.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This Information Disclosure vulnerability, with a CVSS Score of 8.2, allows an unauthenticated attacker to vi...

SSRF (Server-Side Request Forgery) axios Dependency in Confluence Data Center

This is a vulnerability in a non-Atlassian Confluence dependency. Atlassian's application of this dependency presents a lower, non-critical assessed risk. This Critical severity SSRF Server-Side Request Forgery vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1...

MCP Atlassian has SSRF via unvalidated X-Atlassian-Jira-Url / X-Atlassian-Confluence-Url headers

SummaryAn unauthenticated attacker who can reach the mcp-atlassian HTTP endpoint can force the server process to make outbound HTTP requests to an arbitrary attacker-controlled URL by supplying two custom HTTP headers without an Authorization header. No authentication is required. The vulnerabili...

File Inclusion fast-uri Dependency in Confluence Data Center

This High severity File Inclusion vulnerability was introduced in versions 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This File Inclusion vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N allows ...

Injection fast-uri Dependency in Confluence Data Center

This High severity Injection vulnerability was introduced in versions 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This Injection vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N allows an...

RCE (Remote Code Execution) at lodash dependency in Confluence Data Center

This is a vulnerability in a non-Atlassian Confluence dependency. Atlassian's application of this dependency presents a lower, non-critical assessed risk. This was previously disclosed in our July 2026 Security Bulletin, however, we discovered that the fix was incomplete. Please upgrade to...

DoS (Denial of Service) netty Dependency in Confluence Data Center

This High severity DoS Denial of Service vulnerability was introduced in versions 7.4.0, 7.13.0, 7.19.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This DoS Denial of Service vulnerability, with a CVSS Score of 7.5 and a CVSS Vect...

Prototype Pollution Axios Dependency in Confluence Data Center

This is a vulnerability in a non-Atlassian Confluence dependency. Atlassian's application of this dependency presents a lower, non-critical assessed risk. This Critical severity Injection vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.1.2, and 10.2.0 of...

SSRF (Server-Side Request Forgery) axios Dependency in Confluence Data Center

This is a vulnerability in a non-Atlassian Confluence dependency. Atlassian's application of this dependency presents a lower, non-critical assessed risk. This Critical severity SSRF Server-Side Request Forgery vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1,...

Injection axios Dependency in Confluence Data Center

This High severity Injection vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This Injection vulnerability, with a CVSS Score of 7.4 and a CVSS Vector of CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N allows an...

SSRF (Server-Side Request Forgery) Axios Dependency in Confluence Data Center

This is a vulnerability in a non-Atlassian Confluence dependency. Atlassian's application of this dependency presents a lower, non-critical assessed risk. This Critical severity SSRF Server-Side Request Forgery vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1,...

Injection axios Dependency in Confluence Data Center

This High severity Injection vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This Injection vulnerability, with a CVSS Score of 7.4 and a CVSS Vector of CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N allows an...