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CVE-2026-21579

Quick assessment

Affected
Atlassian Confluence Data Center
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Atlassian confluence data center是澳大利亚Atlassian公司的Confluence Center的数据中心版本。 Confluence Data Center 7.17.0版本、7.19.0版本、8.5.0版本、8.9.0版本、9.0.1版本、9.1.0版本、9.2.0版本、10.0.2版本、10.1.0版本和10.2.0版本存在安全漏洞，该漏洞源于信息泄露漏洞，可能导致未经身份验证的攻击者查看敏感信息。

AI Predicted 8.2 Difficulty: Trivial EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 11

VendorProduct Version RangeStatus
Atlassian Confluence Data Center 10.2.0 to 10.2.13 affected
10.1.0 to 10.1.2 affected
10.0.2 to 10.0.3 affected
9.2.0 to 9.2.21 affected
9.1.0 to 9.1.1 affected
9.0.1 to 9.0.3 affected
8.9.5 to 8.9.8 affected
8.5.14 to 8.5.31 affected
… +3 more rows
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I. Basic Information for CVE-2026-21579

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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 view sensitive information via an Information Disclosure vulnerability. Atlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: Confluence Data Center 9.2: Upgrade to a release greater than or equal to 9.2.22 Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.14 See the release notes ([https://confluence.atlassian.com/doc/confluence-release-notes-327.html]). You can download the latest version of Confluence Data Center from the download center ([https://www.atlassian.com/software/confluence/download-archives]). This vulnerability was reported via our Atlassian (Internal) program.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Atlassian Confluence Data Center 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Atlassian confluence data center是澳大利亚Atlassian公司的Confluence Center的数据中心版本。 Confluence Data Center 7.17.0版本、7.19.0版本、8.5.0版本、8.9.0版本、9.0.1版本、9.1.0版本、9.2.0版本、10.0.2版本、10.1.0版本和10.2.0版本存在安全漏洞，该漏洞源于信息泄露漏洞，可能导致未经身份验证的攻击者查看敏感信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Atlassian Confluence Data Center 10.2.0 to 10.2.13 -

II. Public POCs for CVE-2026-21579

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III. Intelligence Information for CVE-2026-21579

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Vendor Advisories for CVE-2026-21579 (2)

Same Patch Batch · Atlassian · 2026-07-21 · 3 CVEs total

CVE-2026-21575 Atlassian Sourcetree 安全漏洞
CVE-2026-21577 Atlassian Confluence Data Center 安全漏洞

IV. Related Vulnerabilities

Same product: Confluence Data Center
Same vendor: Atlassian

V. Comments for CVE-2026-21579

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