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CVE-2026-70427

Quick assessment

Affected
Jenkins Project Jenkins
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.

Jenkins是Jenkins组织开源的一款持续集成与持续交付的自动化服务器。 Jenkins 2.575及之前版本和LTS 2.568.1及之前版本存在后置链接漏洞，该漏洞源于在解压.tar和.tar.gz归档文件时未安全处理具有空名称的符号链接，可能导致能够控制代理进程的攻击者向控制器提供特制归档文件，从而在文件系统任意位置写入文件，仅受运行Jenkins的用户文件系统访问权限限制。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.43% · P35

Affected Version Matrix 2

VendorProduct Version RangeStatus
Jenkins Project Jenkins 2.576< * unaffected
2.568.2< 2.568.* unaffected
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I. Basic Information for CVE-2026-70427

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not safely handle symbolic links with effectively empty names during the extraction of `.tar` and `.tar.gz` archives, allowing attackers able to control agent processes to provide crafted archives to the controller to write files to arbitrary locations on the file system, restricted only by file system access permissions of the user running Jenkins.
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
Jenkins 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jenkins是Jenkins组织开源的一款持续集成与持续交付的自动化服务器。 Jenkins 2.575及之前版本和LTS 2.568.1及之前版本存在后置链接漏洞，该漏洞源于在解压.tar和.tar.gz归档文件时未安全处理具有空名称的符号链接，可能导致能够控制代理进程的攻击者向控制器提供特制归档文件，从而在文件系统任意位置写入文件，仅受运行Jenkins的用户文件系统访问权限限制。
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
Jenkins Project Jenkins 2.576 ~ * -

II. Public POCs for CVE-2026-70427

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III. Intelligence Information for CVE-2026-70427

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Vendor Advisories for CVE-2026-70427 (1)

Same Patch Batch · Jenkins Project · 2026-08-05 · 23 CVEs total

CVE-2026-70438 Jenkins Parameterized Remote Trigger 安全漏洞
CVE-2026-70448 Jenkins Ivy Report 安全漏洞
CVE-2026-70447 Jenkins AWS CodeBuild 安全漏洞
CVE-2026-70446 Jenkins CodeSonar 安全漏洞
CVE-2026-70444 Jenkins Violation Comments to GitLab 安全漏洞
CVE-2026-70445 Jenkins Sauce OnDemand 安全漏洞
CVE-2026-70443 Jenkins Horreum 安全漏洞
CVE-2026-70442 Jenkins Google Chat Notification 安全漏洞
CVE-2026-70440 Jenkins Qualys Container Scanning Connector 安全漏洞
CVE-2026-70441 Jenkins Summary Display 安全漏洞
CVE-2026-70439 Jenkins XML Job to Job DSL 安全漏洞
CVE-2026-70426 Jenkins 反序列化注入漏洞
CVE-2026-70437 Jenkins Webhook Secret Credentials Provider 安全漏洞
CVE-2026-70436 Jenkins External Workspace Manager 安全漏洞
CVE-2026-70434 Jenkins SCM-Manager Plugin 安全漏洞
CVE-2026-70435 Jenkins SCM-Manager Plugin 安全漏洞
CVE-2026-70433 Jenkins HCL AppScan 安全漏洞
CVE-2026-70432 Jenkins Multijob 跨站请求伪造漏洞
CVE-2026-70431 Jenkins Multijob 代码注入漏洞
CVE-2026-70430 Jenkins 安全漏洞

Showing top 20 of 23 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Jenkins
Same vendor: Jenkins Project

V. Comments for CVE-2026-70427

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