PT-2026-48421 · Jenkins · Jenkins

Published 2026-06-10 · Updated 2026-06-10 · CVE-2026-53436

Mitre

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

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.

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

CVE-2026-53436

Affected Products

Jenkins

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-53436 · Security Note
• https://jenkins.io/security/advisory/2026-06-10/#SECURITY-3711+3755 · Vendor Advisory