CVE-2026-33591

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 57% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 10.0Exploit: None knownExposed: 0

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

A vulnerability in Wapt Server before version 2.6.1.17813 allows a  remote unauthenticated attacker to bypass security restriction using a specially crafted packet and retrieve a valid session token for the targeted account.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity100% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

August 3, 2026

Last Modified

September 1, 2026

Advisory Details (3)

Auto-updated Sep 15, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Security bulletin - WAPT documentation

https://www.wapt.fr/en/doc/wapt-security-bulletin.html
generic🟡 PoC Available

Changelog - WAPT documentation

https://www.wapt.fr/en/doc/wapt-changelog.html#wapt-2-6-1-17813-2026-06-09
generic🟡 PoC Available

Changelog - WAPT documentation

https://www.wapt.fr/en/doc/wapt-changelog.html#wapt-2-6-0-16856-2026-06-09

Vendor Advisories for CVE-2026-33591(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 43× in last 7d / 187× 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 331 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-33591?
CVE-2026-33591 is a critical vulnerability published on August 3, 2026. A vulnerability in Wapt Server before version 2.6.1.17813 allows a remote unauthenticated attacker to bypass security restriction using a specially crafted packet and retrieve a valid session token for the targeted account.
When was CVE-2026-33591 disclosed?
CVE-2026-33591 was first published in the National Vulnerability Database on August 3, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-33591 actively exploited?
CVE-2026-33591 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 56.6% of all scored CVEs.
What is the CVSS score of CVE-2026-33591?
CVE-2026-33591 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-33591?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33591, 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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