CVE-2026-53437
At a glance
- Severity
- MEDIUM 4.3
- EPSS
- EPSS 0.47 % · percentile 40 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- jenkins
- NVD status
- Modified
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.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N | CISA-ADP |
| CVSS 3.1 | HIGH 7.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N | redhat-SADP |
| CVSS 3.1 | MEDIUM 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
| CVSS 3.1 | HIGH 7.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Weaknesses (CWE)
Advisories
- GHSA-463r-5m89-4xfr — Jenkins Open Redirect Through Newline/Tab Characters in Redirect URL
European references
- ENISA EUVD · EUVD-2026-36021
- GCVE · GCVE-0-2026-53437
Affected configurations (NVD CPE)
cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*< 2.555.3cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*< 2.568
Affected products
| Product | Versions |
|---|---|
| Jenkins Project · Jenkins | unaffected 2.568 < * ; unaffected 2.555.3 < 2.555.* |
References
- https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3711+3755
- 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
- https://access.redhat.com/errata/RHSA-2026:60247
- https://access.redhat.com/errata/RHSA-2026:60249
- https://access.redhat.com/errata/RHSA-2026:60248
- https://access.redhat.com/errata/RHSA-2026:60239
- https://access.redhat.com/errata/RHSA-2026:60251
- https://access.redhat.com/errata/RHSA-2026:60246
- https://access.redhat.com/errata/RHSA-2026:60250
- https://access.redhat.com/errata/RHSA-2026:60252
- https://access.redhat.com/errata/RHSA-2026:60259
- https://access.redhat.com/errata/RHSA-2026:60254
- https://access.redhat.com/errata/RHSA-2026:60256
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |