CVE-2026-28323

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-30. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

SolarWinds Web Help Desk is found to be affected by a SAML authentication bypass vulnerability. This requires the SAML 2.0 authentication method to be enabled.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

July 30, 2026

Last Modified

August 17, 2026

Advisory Details (3)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

SolarWinds Trust Center Security Advisories | CVE-2026-28323

https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28323
generic

WHD 2026.2.1 release notes

https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-2-1_release_notes.htm
generic

Secure your Web Help Desk deployment

https://documentation.solarwinds.com/en/success_center/whd/content/helpdesksecureconfiguration.htm

Vendor Advisories for CVE-2026-28323(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 38× in last 7d / 170× 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 311 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-28323?
CVE-2026-28323 is a critical vulnerability published on July 30, 2026. SolarWinds Web Help Desk is found to be affected by a SAML authentication bypass vulnerability. This requires the SAML 2.0 authentication method to be enabled.
When was CVE-2026-28323 disclosed?
CVE-2026-28323 was first published in the National Vulnerability Database on July 30, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-28323 actively exploited?
CVE-2026-28323 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 49.7% of all scored CVEs.
What is the CVSS score of CVE-2026-28323?
CVE-2026-28323 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-28323?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-28323, 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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