CVE-2026-15064

HIGHPre-NVD 8.78.7—
EchelonGraph scoreHIGH 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(high)
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
12%
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 25× in last 7d / 120× 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 120 total refreshes for this CVE.

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

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 87.7% 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-15064

Explore →

Is Your Infrastructure Affected by CVE-2026-15064?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs