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Medium 4.3Published Jun 10, 2026

CVE-2026-53437Jenkins 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 tab or newline characters between `//`, a…

Updated under an hour ago ()

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No exploitation reported and no EPSS estimate yet.

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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 tab or newline characters between `//`, allowing attackers to perform phishing attacks.

CVSS
4.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weakness (CWE)
CWE-601
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
Not given
NVD analysis
Modified
Record last updated
Aug 27, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
jenkins jenkins
jenkins:jenkins
before 2.555.3; before 2.568
NVD

References

  • vendor-advisory

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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CVE-2026-53437: Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login | InfoSec Signals