CVE-2026-64966

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7% (52nd 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
8.7EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 8.7Exploit: 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 is vulnerable to a Path Traversal vulnerability in ZIP extraction functionality. An attacker with instructor privileges can upload and extract a specially crafted ZIP archive, causing files to be written outside the intended extraction directory. This allows an attacker to place a server-executable .phtml file in the web root and achieve remote code execution with web server privileges on the underlying server.

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
8.7
EG Score
8.7HIGHmedium confidence
EG Risk
39
EG Risk 39/100CISA 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
Severity87% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
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
0.7%
EPSS %ILE
52nd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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 total (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-2026-64966(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 24× in last 7d / 97× 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 160 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-64966?
CVE-2026-64966 is a high vulnerability published on August 20, 2026. ATutor is vulnerable to a Path Traversal vulnerability in ZIP extraction functionality. An attacker with instructor privileges can upload and extract a specially crafted ZIP archive, causing files to be written outside the intended extraction directory. This allows an attacker to place a…
When was CVE-2026-64966 disclosed?
CVE-2026-64966 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-2026-64966 actively exploited?
CVE-2026-64966 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (52nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-64966?
CVE-2026-64966 has a CVSS base score of 8.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-64966?
No fix for CVE-2026-64966 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-2026-64966 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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