CVE-2026-53436

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM 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
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 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 relative path segments (./ or ../), allowing attackers to perform phishing attacks.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity43% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

June 10, 2026

Last Modified

June 11, 2026

Advisory Details (1)

Auto-updated Jun 19, 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-2026-53436(1)

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

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.jenkins-ci.main:jenkins-core2.556 ... 2.567 (12 versions)2.568—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 64× 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.

Showing the most recent 100 of 169 total refreshes for this CVE.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-25 00:26 UTCEG score recompute
  3. 2026-08-23 10:48 UTCEG score recompute
  4. 2026-08-23 00:19 UTCEPSS rescore
  5. 2026-08-21 23:49 UTCEPSS rescore
  6. 2026-08-21 18:02 UTCEG score recompute
  7. 2026-08-20 22:55 UTCEPSS rescore
  8. 2026-08-20 17:23 UTCEG score recompute
  9. 2026-08-19 17:04 UTCEPSS rescore
  10. 2026-08-19 14:59 UTCEG score recompute
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-16 23:58 UTCEG score recompute
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 02:14 UTCEPSS rescore
  16. 2026-08-16 00:01 UTCEG score recompute
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-13 22:17 UTCEG score recompute
  19. 2026-08-13 22:00 UTCEPSS rescore
  20. 2026-08-12 20:05 UTCEG score recompute
  21. 2026-08-12 20:05 UTCGHSA enrichment
  22. 2026-08-12 13:51 UTCEPSS rescore
  23. 2026-08-11 20:07 UTCEG score recompute
  24. 2026-08-11 20:07 UTCGHSA enrichment
  25. 2026-08-11 00:00 UTCEPSS rescore
Show 75 more
  1. 2026-08-10 20:07 UTCGHSA enrichment
  2. 2026-08-09 19:51 UTCEG score recompute
  3. 2026-08-09 19:51 UTCGHSA enrichment
  4. 2026-08-09 13:46 UTCEPSS rescore
  5. 2026-08-08 19:54 UTCEG score recompute
  6. 2026-08-08 19:54 UTCGHSA enrichment
  7. 2026-08-08 16:37 UTCEPSS rescore
  8. 2026-08-07 19:56 UTCEG score recompute
  9. 2026-08-07 19:56 UTCGHSA enrichment
  10. 2026-08-06 19:59 UTCEG score recompute
  11. 2026-08-06 19:59 UTCGHSA enrichment
  12. 2026-08-06 13:47 UTCEPSS rescore
  13. 2026-08-05 20:02 UTCEG score recompute
  14. 2026-08-05 20:02 UTCGHSA enrichment
  15. 2026-08-05 19:17 UTCEPSS rescore
  16. 2026-08-04 15:56 UTCEG score recompute
  17. 2026-08-04 15:56 UTCGHSA enrichment
  18. 2026-08-04 15:10 UTCEPSS rescore
  19. 2026-08-04 10:39 UTCEPSS rescore
  20. 2026-08-03 14:51 UTCEG score recompute
  21. 2026-08-03 14:51 UTCGHSA enrichment
  22. 2026-08-03 10:36 UTCEPSS rescore
  23. 2026-08-02 10:09 UTCEG score recompute
  24. 2026-08-02 10:09 UTCGHSA enrichment
  25. 2026-08-02 02:27 UTCEPSS rescore
  26. 2026-08-01 10:11 UTCEG score recompute
  27. 2026-08-01 10:10 UTCGHSA enrichment
  28. 2026-08-01 04:16 UTCEPSS rescore
  29. 2026-07-31 10:10 UTCEG score recompute
  30. 2026-07-31 10:10 UTCGHSA enrichment
  31. 2026-07-30 16:28 UTCEPSS rescore
  32. 2026-07-30 09:53 UTCEG score recompute
  33. 2026-07-30 09:53 UTCGHSA enrichment
  34. 2026-07-30 01:30 UTCEPSS rescore
  35. 2026-07-29 05:04 UTCEG score recompute
  36. 2026-07-29 05:04 UTCGHSA enrichment
  37. 2026-07-28 15:37 UTCEPSS rescore
  38. 2026-07-28 02:33 UTCEG score recompute
  39. 2026-07-28 02:33 UTCGHSA enrichment
  40. 2026-07-26 21:03 UTCEG score recompute
  41. 2026-07-26 21:03 UTCGHSA enrichment
  42. 2026-07-26 14:54 UTCEPSS rescore
  43. 2026-07-25 14:18 UTCEPSS rescore
  44. 2026-07-24 14:18 UTCEPSS rescore
  45. 2026-07-23 14:18 UTCEPSS rescore
  46. 2026-07-23 03:19 UTCEG score recompute
  47. 2026-07-22 14:08 UTCEPSS rescore
  48. 2026-07-21 15:25 UTCEPSS rescore
  49. 2026-07-20 17:08 UTCEPSS rescore
  50. 2026-07-19 14:31 UTCEPSS rescore
  51. 2026-07-19 14:31 UTCEPSS rescore
  52. 2026-07-19 02:29 UTCEPSS rescore
  53. 2026-07-18 10:04 UTCEPSS rescore
  54. 2026-07-16 17:03 UTCEPSS rescore
  55. 2026-07-16 04:41 UTCGHSA enrichment
  56. 2026-07-15 16:57 UTCEPSS rescore
  57. 2026-07-15 16:57 UTCEPSS rescore
  58. 2026-07-15 03:57 UTCGHSA enrichment
  59. 2026-07-15 02:00 UTCEPSS rescore
  60. 2026-07-15 02:00 UTCEPSS rescore
  61. 2026-07-14 03:55 UTCGHSA enrichment
  62. 2026-07-13 22:31 UTCEPSS rescore
  63. 2026-07-13 06:13 UTCEPSS rescore
  64. 2026-07-13 06:13 UTCEPSS rescore
  65. 2026-07-13 03:57 UTCGHSA enrichment
  66. 2026-07-12 05:46 UTCEPSS rescore
  67. 2026-07-12 03:55 UTCGHSA enrichment
  68. 2026-07-11 08:27 UTCEPSS rescore
  69. 2026-07-11 08:27 UTCEPSS rescore
  70. 2026-07-11 03:38 UTCGHSA enrichment
  71. 2026-07-09 22:39 UTCGHSA enrichment
  72. 2026-07-09 19:10 UTCEPSS rescore
  73. 2026-07-09 19:10 UTCEPSS rescore
  74. 2026-07-08 22:01 UTCGHSA enrichment
  75. 2026-07-08 15:16 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-53436?
CVE-2026-53436 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 relative path segments (./ or ../), allowing attackers to perform phishing attacks.
When was CVE-2026-53436 disclosed?
CVE-2026-53436 was first published in the National Vulnerability Database on June 10, 2026, with the most recent update on June 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53436 actively exploited?
CVE-2026-53436 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.9% of all scored CVEs.
What is the CVSS score of CVE-2026-53436?
CVE-2026-53436 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-53436?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53436, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-53436

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