CVE-2026-53436
4.3
MEDIUM
CVSS 3.1
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.
How to fix CVE-2026-53436
To remediate CVE-2026-53436, upgrade the affected package to a fixed version below.
- Bitnami/jenkins—upgrade to 2.568.0 or later
Is CVE-2026-53436 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-53436.
Affected packages (1)
- from 0, < 2.568.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |