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CVE-2021-26072

Quick assessment

Affected
Atlassian Confluence Server
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Atlassian Confluence Server和Atlassian Confluence都是澳大利亚Atlassian公司的产品。Atlassian Confluence Server是一套具有企业知识管理功能，并支持用于构建企业WiKi的协同软件的服务器版本。Atlassian Confluence是一套专业的企业知识管理与协同软件，也可以用于构建企业WiKi。 Confluence Server and Confluence Data Center before version 5.8.6 存

AI Predicted 6.5 Difficulty: Easy EPSS 38.84% · P99

Public Exploits 1

Nuclei · 1 CVE-2021-26072.yaml [template]

Possible ATT&CK Techniques 1 AI

T1187 · Forced Authentication
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I. Basic Information for CVE-2021-26072

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The WidgetConnector plugin in Confluence Server and Confluence Data Center before version 5.8.6 allowed remote attackers to manipulate the content of internal network resources via a blind Server-Side Request Forgery (SSRF) vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Atlassian Confluence Server and Confluence 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Atlassian Confluence Server和Atlassian Confluence都是澳大利亚Atlassian公司的产品。Atlassian Confluence Server是一套具有企业知识管理功能，并支持用于构建企业WiKi的协同软件的服务器版本。Atlassian Confluence是一套专业的企业知识管理与协同软件，也可以用于构建企业WiKi。 Confluence Server and Confluence Data Center before version 5.8.6 存
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 Server unspecified ~ 5.8.6 -
Atlassian Confluence Data Center unspecified ~ 5.8.6 -

II. Public POCs for CVE-2021-26072

# POC Description Source Link Shenlong Link
1 Atlassian Confluence < 5.8.6 is affected by a blind server-side request forgery vulnerability in the widgetconnector plugin. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/confluence/confluence-ssrf-sharelinks.yaml POC Details
2 Confluence Server and Data Center before 5.8.6 contain a blind server-side request forgery caused by the WidgetConnector plugin, letting remote attackers manipulate internal network resources, exploit requires network access to the server. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26072.yaml POC Details
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III. Intelligence Information for CVE-2021-26072

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Other References for CVE-2021-26072 (1)

Same Patch Batch · Atlassian · 2021-04-01 · 4 CVEs total

CVE-2020-36286 Atlassian Jira Server and Data Center 安全漏洞
CVE-2021-26071 Atlassian Jira Server and Data Center 跨站请求伪造漏洞
CVE-2020-36238 Atlassian Jira Server and Data Center 安全漏洞

IV. Related Vulnerabilities

Same product: Confluence Server
Same vendor: Atlassian

V. Comments for CVE-2021-26072

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