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CVE-2021-26086

Quick assessment

Affected
Atlassian Jira Server
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Atlassian Jira是澳大利亚Atlassian公司的一套缺陷跟踪管理系统。该系统主要用于对工作中各类问题、缺陷进行跟踪管理。 Atlassian Jira存在安全漏洞，该漏洞源于受影响版本的Atlassian Jira服务器和数据中心代码开发过程中存在实现不当的问题导致路径遍历漏洞。允许远程攻击者可利用该漏洞通过WEB-INF web.xml端点读取特定文件。受影响的版本为8.5.14之前版本、8.6.0版本至8.13.6、8.14.0版本至8.16.1。

AI Predicted 7.5 Difficulty: Easy KEV EPSS 100.00% · P100

Public Exploits 2

ExploitDB · 1 EDB-50380 [webapps]
Nuclei · 1 CVE-2021-26086.yaml [template]

Possible ATT&CK Techniques 2 AI

T1005 · Data from Local System T1155
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I. Basic Information for CVE-2021-26086

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Affected versions of Atlassian Jira Server and Data Center allow remote attackers to read particular files via a path traversal vulnerability in the /WEB-INF/web.xml endpoint. The affected versions are before version 8.5.14, from version 8.6.0 before 8.13.6, and from version 8.14.0 before 8.16.1.
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 Jira 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Atlassian Jira是澳大利亚Atlassian公司的一套缺陷跟踪管理系统。该系统主要用于对工作中各类问题、缺陷进行跟踪管理。 Atlassian Jira存在安全漏洞，该漏洞源于受影响版本的Atlassian Jira服务器和数据中心代码开发过程中存在实现不当的问题导致路径遍历漏洞。允许远程攻击者可利用该漏洞通过WEB-INF web.xml端点读取特定文件。受影响的版本为8.5.14之前版本、8.6.0版本至8.13.6、8.14.0版本至8.16.1。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Atlassian Jira Server unspecified ~ 8.5.14 -
Atlassian Jira Data Center unspecified ~ 8.5.14 -

II. Public POCs for CVE-2021-26086

# POC Description Source Link Shenlong Link
1 Confluence OGNL Injection [CVE-2021-26084]. https://github.com/Jeromeyoung/CVE-2021-26086 POC Details
2 Atlassian Jira Server/Data Center 8.4.0 - Arbitrary File read (CVE-2021-26086) https://github.com/ColdFusionX/CVE-2021-26086 POC Details
3 Affected versions of Atlassian Jira Limited Server and Data Center are vulnerable to local file inclusion because they allow remote attackers to read particular files via a path traversal vulnerability in the /WEB-INF/web.xml endpoint. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26086.yaml POC Details
4 None https://github.com/Threekiii/Awesome-POC/blob/master/Web%E5%BA%94%E7%94%A8%E6%BC%8F%E6%B4%9E/Atlassian%20Jira%20cfx%20%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E8%AF%BB%E5%8F%96%E6%BC%8F%E6%B4%9E%20CVE-2021-26086.md POC Details
5 None https://github.com/Threekiii/Awesome-POC/blob/master/Web%E5%BA%94%E7%94%A8%E6%BC%8F%E6%B4%9E/Atlassian%20Jira%20%E6%95%8F%E6%84%9F%E4%BF%A1%E6%81%AF%E6%B3%84%E9%9C%B2%20CVE-2021-26086.md POC Details
6 Confluence server webwork OGNL injection https://github.com/Official-BlackHat13/CVE-2021-26086 POC Details
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III. Intelligence Information for CVE-2021-26086

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Exploits & Public PoCs for CVE-2021-26086 (1)

Other References for CVE-2021-26086 (1)

IV. Related Vulnerabilities

Same product: Jira Server
Same vendor: Atlassian

V. Comments for CVE-2021-26086

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