What’s Vulnerable › Vulnerabilities
CVE-2026-53436
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-10 · updated 2026-10-26
- Weakness: CWE-601
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.
Affected products
- Jenkins: before 2.555.3; before 2.568 — fixed in 2.555.3, 2.568
How to fix
Upgrade to a fixed version: Jenkins 2.555.3, 2.568. Check the vendor advisory for mitigations.
References
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