CVE-2026-53436

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3711+3755	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:jenkins:jenkins:::::lts:::*
	cpe:2.3:a:jenkins:jenkins:::::-:::*

History

26 Oct 2026, 11:10

Type	Values Removed	Values Added
Summary		(es) Jenkins 2.567 y anteriores, LTS 2.555.2 y anteriores determina incorrectamente que una URL de redirección después del inicio de sesión apunta legítimamente a Jenkins cuando contiene segmentos de ruta relativa (’./’ o ’.. / ’), permitiendo a los atacantes realizar ataques de phishing.

Information

Published : 2026-06-10 14:16

Updated : 2026-10-26 11:10

NVD link : CVE-2026-53436

Mitre link : CVE-2026-53436

CVE.ORG link : CVE-2026-53436

JSON object : View

Products Affected

jenkins

jenkins

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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