CVE-2026-53437

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-06-10. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
4.3
EG Score
4.3(high)
EPSS
28.4%
KEV
Not listed

Published

June 10, 2026

Last Modified

June 30, 2026

Advisory Details (1)

Auto-updated Jun 18, 2026
No patch confirmed yet.
generic

Jenkins Security Advisory 2026-06-10

https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3711+3755

Vendor Advisories for CVE-2026-53437(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 22× in last 7d / 86× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 19:57 UTCEG score recompute
  6. 2026-07-05 19:57 UTCGHSA enrichment
  7. 2026-07-05 02:31 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 19:24 UTCEG score recompute
  10. 2026-07-04 19:24 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-03 16:36 UTCEG score recompute
  14. 2026-07-03 16:36 UTCGHSA enrichment
  15. 2026-07-02 16:04 UTCEG score recompute
  16. 2026-07-02 16:04 UTCGHSA enrichment
  17. 2026-07-01 15:31 UTCEG score recompute
  18. 2026-07-01 15:31 UTCGHSA enrichment
  19. 2026-07-01 15:07 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 14:58 UTCEG score recompute
  22. 2026-06-30 14:58 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-29 14:06 UTCEPSS rescore
  25. 2026-06-29 13:58 UTCEG score recompute
Show 61 more
  1. 2026-06-29 13:57 UTCGHSA enrichment
  2. 2026-06-28 14:07 UTCEPSS rescore
  3. 2026-06-28 13:24 UTCEG score recompute
  4. 2026-06-28 13:24 UTCGHSA enrichment
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-28 04:56 UTCEPSS rescore
  7. 2026-06-27 12:52 UTCEG score recompute
  8. 2026-06-27 12:52 UTCGHSA enrichment
  9. 2026-06-27 03:08 UTCEPSS rescore
  10. 2026-06-26 12:19 UTCEG score recompute
  11. 2026-06-26 12:19 UTCGHSA enrichment
  12. 2026-06-25 13:49 UTCEPSS rescore
  13. 2026-06-25 08:32 UTCEG score recompute
  14. 2026-06-25 08:32 UTCGHSA enrichment
  15. 2026-06-24 14:05 UTCEPSS rescore
  16. 2026-06-24 07:58 UTCEG score recompute
  17. 2026-06-24 07:58 UTCGHSA enrichment
  18. 2026-06-23 21:33 UTCEPSS rescore
  19. 2026-06-23 21:33 UTCEPSS rescore
  20. 2026-06-23 04:51 UTCEG score recompute
  21. 2026-06-23 04:51 UTCGHSA enrichment
  22. 2026-06-22 14:25 UTCEPSS rescore
  23. 2026-06-22 14:25 UTCEPSS rescore
  24. 2026-06-22 04:10 UTCEG score recompute
  25. 2026-06-22 04:10 UTCGHSA enrichment
  26. 2026-06-21 14:56 UTCEPSS rescore
  27. 2026-06-21 14:56 UTCEPSS rescore
  28. 2026-06-21 01:59 UTCEPSS rescore
  29. 2026-06-21 01:59 UTCEPSS rescore
  30. 2026-06-20 21:32 UTCEG score recompute
  31. 2026-06-20 21:32 UTCGHSA enrichment
  32. 2026-06-19 20:58 UTCEG score recompute
  33. 2026-06-19 20:58 UTCGHSA enrichment
  34. 2026-06-19 19:26 UTCEPSS rescore
  35. 2026-06-19 19:26 UTCEPSS rescore
  36. 2026-06-18 20:24 UTCEG score recompute
  37. 2026-06-18 20:23 UTCGHSA enrichment
  38. 2026-06-18 17:52 UTCEPSS rescore
  39. 2026-06-18 17:52 UTCEPSS rescore
  40. 2026-06-17 19:40 UTCEG score recompute
  41. 2026-06-17 19:39 UTCGHSA enrichment
  42. 2026-06-17 17:53 UTCEPSS rescore
  43. 2026-06-16 19:07 UTCEG score recompute
  44. 2026-06-16 19:07 UTCGHSA enrichment
  45. 2026-06-16 17:53 UTCEPSS rescore
  46. 2026-06-15 18:34 UTCEG score recompute
  47. 2026-06-15 18:34 UTCGHSA enrichment
  48. 2026-06-15 17:49 UTCEPSS rescore
  49. 2026-06-15 17:49 UTCEPSS rescore
  50. 2026-06-14 23:18 UTCEPSS rescore
  51. 2026-06-14 18:00 UTCEG score recompute
  52. 2026-06-14 17:59 UTCGHSA enrichment
  53. 2026-06-13 23:00 UTCEPSS rescore
  54. 2026-06-13 17:21 UTCEG score recompute▲ 4.30
  55. 2026-06-13 17:20 UTCGHSA enrichment
  56. 2026-06-12 23:12 UTCEPSS rescore
  57. 2026-06-12 23:12 UTCEPSS rescore
  58. 2026-06-11 14:00 UTCEPSS rescore
  59. 2026-06-10 17:18 UTCNVD updateCVSS v3 → 4.3 · severity → MEDIUM
  60. 2026-06-10 15:20 UTCEG score recompute
  61. 2026-06-10 15:18 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-53437?
CVE-2026-53437 is a medium vulnerability published on June 10, 2026. 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.
When was CVE-2026-53437 disclosed?
CVE-2026-53437 was first published in the National Vulnerability Database on June 10, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53437 actively exploited?
CVE-2026-53437 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-53437?
CVE-2026-53437 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-53437?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53437, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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