CVE-2026-64964

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (28th percentile of EPSS-scored CVEs). 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
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.3Exploit: None knownExposed services: Not assessed

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

ATutor generates predictable email confirmation tokens due to the use of insufficiently random values in the account confirmation functionality. Due to the use of predictable values related to user registration, an attacker who knows or can predict these values can guess valid account activation tokens. This allows an attacker to activate an unconfirmed account without access to the victim's email inbox. Product is no longer actively supported and the vulnerabilities have not been fixed. Only version 2.2.4 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.

CVSS v3
6.3
EG Score
6.3MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100CISA SSVC

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
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
28th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 20, 2026

Last Modified

August 28, 2026

Advisory Details (2)

Auto-updated Aug 20, 2026
No patch confirmed yet.
generic

ATutor Home

https://atutor.github.io/
generic

Vulnerabilities in ATutor software | CERT Polska

https://cert.pl/en/posts/2026/08/CVE-2026-64960

Vendor Advisories for CVE-2026-64964(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 20× in last 7d / 75× 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 124 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-64964?
CVE-2026-64964 is a medium vulnerability published on August 20, 2026. ATutor generates predictable email confirmation tokens due to the use of insufficiently random values in the account confirmation functionality. Due to the use of predictable values related to user registration, an attacker who knows or can predict these values can guess valid account activation…
When was CVE-2026-64964 disclosed?
CVE-2026-64964 was first published on August 20, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64964 actively exploited?
CVE-2026-64964 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (28th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-64964?
CVE-2026-64964 has a CVSS base score of 6.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-64964?
No fix for CVE-2026-64964 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-64964 are linked in the Vendor Advisories panel on this page.

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