CVE-2026-15064

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

Score 8.7 from GitHub Security Advisory (severity: HIGH) published 2026-07-28. a secondary CVSS source baseline 8.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.7Exploit: None knownExposed: 0

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

IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to HTTP Response Smuggling due to improper handling of non-standard HTTP version tokens.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity87% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

July 28, 2026

Last Modified

August 5, 2026

Advisory Details (1)

Auto-updated Jul 28, 2026
No patch confirmed yet.
generic

Security Bulletin: IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities

https://www.ibm.com/support/pages/node/7281625

Vendor Advisories for CVE-2026-15064(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 21× in last 7d / 92× 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 191 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-15064?
CVE-2026-15064 is a high vulnerability published on July 28, 2026. IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to HTTP Response Smuggling due to improper handling of non-standard HTTP version tokens.
When was CVE-2026-15064 disclosed?
CVE-2026-15064 was first published in the National Vulnerability Database on July 28, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15064 actively exploited?
CVE-2026-15064 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 87.2% of all scored CVEs.
What is the CVSS score of CVE-2026-15064?
CVE-2026-15064 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-15064?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15064, 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.

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