Vulnerability intelligence

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 Score

4.3

Medium

EPSS — Exploit Probability

0.0%

Riskier than 0% of all CVEs

Exploitation

Not in CISA KEV

No federal exploitation record

Remediation

unknown

Check vendor advisories

NVD entry PoC / advisory

1 article across 1 outlet · first covered Jun 11, 2026 · latest Jun 11, 2026

Coverage timeline

Jenkins advisory flags critical deserialization flaw and bugs
securityonline.info · Jun 11, 2026