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CVE-2026-53436

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开源的一个应用软件。一个开源自动化服务器Jenkins提供了数百个插件来支持构建，部署和自动化任何项目。 Jenkins 2.567及之前版本和LTS 2.555.2及之前版本存在输入验证错误漏洞，该漏洞源于未正确判断重定向URL是否指向Jenkins，导致攻击者可通过包含相对路径段执行钓鱼攻击。

AI Predicted 5.4 Difficulty: Easy EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1566.002 · Spearphishing Link

Affected Version Matrix 2

VendorProduct Version RangeStatus
Jenkins Project Jenkins 2.568< * unaffected
2.555.3< 2.555.* unaffected
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I. Basic Information for CVE-2026-53436

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins when it contains relative path segments (`./` or `../`), allowing attackers to perform phishing attacks.
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 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jenkins是Jenkins开源的一个应用软件。一个开源自动化服务器Jenkins提供了数百个插件来支持构建，部署和自动化任何项目。 Jenkins 2.567及之前版本和LTS 2.555.2及之前版本存在输入验证错误漏洞，该漏洞源于未正确判断重定向URL是否指向Jenkins，导致攻击者可通过包含相对路径段执行钓鱼攻击。
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 2.568 ~ * -

II. Public POCs for CVE-2026-53436

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-53436

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Vendor Advisories for CVE-2026-53436 (1)

Same Patch Batch · Jenkins Project · 2026-06-10 · 8 CVEs total

CVE-2026-53442 Jenkins 安全漏洞
CVE-2026-53441 Jenkins 安全漏洞
CVE-2026-53440 Jenkins 输入验证错误漏洞
CVE-2026-53439 Jenkins 安全漏洞
CVE-2026-53437 Jenkins 输入验证错误漏洞
CVE-2026-53438 Jenkins 安全漏洞
CVE-2026-53435 Jenkins 代码问题漏洞

IV. Related Vulnerabilities

Same product: Jenkins
Same vendor: Jenkins Project

V. Comments for CVE-2026-53436

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