CVE-2026-15328

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 86% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: 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 request smuggling.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
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-2026-15328(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 23× 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 07:49 UTCGHSA enrichment
  2. 2026-08-25 19:48 UTCEG score recompute
  3. 2026-08-25 19:48 UTCGHSA enrichment
  4. 2026-08-25 13:48 UTCEPSS rescore
  5. 2026-08-25 07:48 UTCGHSA enrichment
  6. 2026-08-24 19:47 UTCEG score recompute
  7. 2026-08-24 19:47 UTCGHSA enrichment
  8. 2026-08-24 07:47 UTCGHSA enrichment
  9. 2026-08-23 19:47 UTCGHSA enrichment
  10. 2026-08-23 07:47 UTCEG score recompute
  11. 2026-08-23 07:47 UTCGHSA enrichment
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-22 19:47 UTCGHSA enrichment
  14. 2026-08-22 07:47 UTCGHSA enrichment
  15. 2026-08-21 19:47 UTCGHSA enrichment
  16. 2026-08-21 07:47 UTCEG score recompute
  17. 2026-08-21 07:47 UTCGHSA enrichment
  18. 2026-08-20 22:55 UTCEPSS rescore
  19. 2026-08-20 19:46 UTCGHSA enrichment
  20. 2026-08-20 07:46 UTCGHSA enrichment
  21. 2026-08-19 19:46 UTCEG score recompute
  22. 2026-08-19 19:46 UTCGHSA enrichment
  23. 2026-08-19 17:03 UTCEPSS rescore
  24. 2026-08-19 06:48 UTCGHSA enrichment
  25. 2026-08-18 18:38 UTCEG score recompute
Show 75 more
  1. 2026-08-18 18:38 UTCGHSA enrichment
  2. 2026-08-18 13:48 UTCEPSS rescore
  3. 2026-08-18 04:14 UTCGHSA enrichment
  4. 2026-08-17 16:06 UTCEG score recompute
  5. 2026-08-17 16:06 UTCGHSA enrichment
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-17 04:06 UTCGHSA enrichment
  8. 2026-08-16 16:05 UTCEG score recompute
  9. 2026-08-16 16:05 UTCGHSA enrichment
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 04:05 UTCEG score recompute
  12. 2026-08-16 04:05 UTCGHSA enrichment
  13. 2026-08-16 02:14 UTCEPSS rescore
  14. 2026-08-15 16:05 UTCGHSA enrichment
  15. 2026-08-15 04:05 UTCEG score recompute
  16. 2026-08-15 04:05 UTCGHSA enrichment
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-14 16:04 UTCGHSA enrichment
  19. 2026-08-14 04:04 UTCEG score recompute
  20. 2026-08-14 04:04 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-13 16:04 UTCGHSA enrichment
  23. 2026-08-13 03:58 UTCGHSA enrichment
  24. 2026-08-12 15:58 UTCEG score recompute
  25. 2026-08-12 15:58 UTCGHSA enrichment
  26. 2026-08-12 13:50 UTCEPSS rescore
  27. 2026-08-12 03:58 UTCGHSA enrichment
  28. 2026-08-11 15:57 UTCEG score recompute
  29. 2026-08-11 15:57 UTCGHSA enrichment
  30. 2026-08-11 13:42 UTCEPSS rescore
  31. 2026-08-11 03:57 UTCEG score recompute
  32. 2026-08-11 03:57 UTCGHSA enrichment
  33. 2026-08-11 00:00 UTCEPSS rescore
  34. 2026-08-10 15:57 UTCGHSA enrichment
  35. 2026-08-10 03:52 UTCGHSA enrichment
  36. 2026-08-09 15:52 UTCEG score recompute
  37. 2026-08-09 15:52 UTCGHSA enrichment
  38. 2026-08-09 13:46 UTCEPSS rescore
  39. 2026-08-09 03:52 UTCEG score recompute
  40. 2026-08-09 03:52 UTCGHSA enrichment
  41. 2026-08-08 16:37 UTCEPSS rescore
  42. 2026-08-08 15:52 UTCGHSA enrichment
  43. 2026-08-08 03:51 UTCEG score recompute
  44. 2026-08-08 03:51 UTCGHSA enrichment
  45. 2026-08-07 15:51 UTCGHSA enrichment
  46. 2026-08-07 03:51 UTCGHSA enrichment
  47. 2026-08-06 15:51 UTCEG score recompute
  48. 2026-08-06 15:51 UTCGHSA enrichment
  49. 2026-08-06 13:46 UTCEPSS rescore
  50. 2026-08-06 03:47 UTCEG score recompute
  51. 2026-08-06 03:47 UTCGHSA enrichment
  52. 2026-08-05 19:17 UTCEPSS rescore
  53. 2026-08-05 15:47 UTCEG score recompute▲ 0.70
  54. 2026-08-05 15:47 UTCGHSA enrichment
  55. 2026-08-05 15:47 UTCNVD updateCVSS v3 → 8.1
  56. 2026-08-05 14:50 UTCGHSA enrichment
  57. 2026-08-05 02:50 UTCEG score recompute
  58. 2026-08-05 02:50 UTCGHSA enrichment
  59. 2026-08-04 15:10 UTCEPSS rescore
  60. 2026-08-04 14:50 UTCEG score recompute
  61. 2026-08-04 14:50 UTCGHSA enrichment
  62. 2026-08-04 10:38 UTCEPSS rescore
  63. 2026-08-04 02:48 UTCGHSA enrichment
  64. 2026-08-03 14:48 UTCEG score recompute
  65. 2026-08-03 14:48 UTCGHSA enrichment
  66. 2026-08-03 10:35 UTCEPSS rescore
  67. 2026-08-03 02:48 UTCGHSA enrichment
  68. 2026-08-02 14:47 UTCGHSA enrichment
  69. 2026-08-02 02:47 UTCEG score recompute
  70. 2026-08-02 02:47 UTCGHSA enrichment
  71. 2026-08-02 02:26 UTCEPSS rescore
  72. 2026-08-01 14:47 UTCEG score recompute
  73. 2026-08-01 14:47 UTCGHSA enrichment
  74. 2026-08-01 04:15 UTCEPSS rescore
  75. 2026-08-01 02:47 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-15328?
CVE-2026-15328 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 request smuggling.
When was CVE-2026-15328 disclosed?
CVE-2026-15328 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-2026-15328 actively exploited?
CVE-2026-15328 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 86.4% of all scored CVEs.
What is the CVSS score of CVE-2026-15328?
CVE-2026-15328 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-15328?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15328, 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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