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Vulnerability record · CVE-2026-53437 · published 10 June 2026

CVE-2026-53437: Jenkins open redirect vulnerability

Jenkins · Jenkins

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.

4.3 CVSS 3.1 Medium EPSS 0.68% · top 48.8% CWE-601 · Open redirect
4.3CVSS 3.1 base score
0.68%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
15References
27 Aug 2026Last modified by NVD

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3711+3755 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:60239
https://access.redhat.com/errata/RHSA-2026:60246
https://access.redhat.com/errata/RHSA-2026:60247
https://access.redhat.com/errata/RHSA-2026:60248
https://access.redhat.com/errata/RHSA-2026:60249
https://access.redhat.com/errata/RHSA-2026:60250
https://access.redhat.com/errata/RHSA-2026:60251
https://access.redhat.com/errata/RHSA-2026:60252
https://access.redhat.com/errata/RHSA-2026:60254
https://access.redhat.com/errata/RHSA-2026:60256
https://access.redhat.com/errata/RHSA-2026:60259
https://access.redhat.com/security/cve/CVE-2026-53437
https://bugzilla.redhat.com/show_bug.cgi?id=2487544
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53437.json

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-53437), CISA KEV, FIRST EPSS (scores of 2026-10-12). This page is refreshed as NVD updates the record.