CVE-2026-63240

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-07-29. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

An information disclosure vulnerability in Koollab LMS allowed an authenticated learner to obtain correct quiz answers from the course status endpoint without completing the assessment legitimately, compromising the integrity of assessments.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

July 29, 2026

Last Modified

July 30, 2026

Advisory Details (1)

Auto-updated Jul 29, 2026
No patch confirmed yet.
generic

Koollab LMS - Multiple Vulnerabilities including Remote Code Execution, SQL Injection, and Authentication Bypass | Cyber Security Agency of Singapore

https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/

Vendor Advisories for CVE-2026-63240(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 15× in last 7d / 77× 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.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 23:24 UTCEG score recompute
  3. 2026-08-29 23:24 UTCGHSA enrichment
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-27 14:25 UTCEPSS rescore
  6. 2026-08-27 09:29 UTCEG score recompute
  7. 2026-08-27 09:29 UTCGHSA enrichment
  8. 2026-08-26 14:46 UTCEPSS rescore
  9. 2026-08-26 08:20 UTCEG score recompute
  10. 2026-08-26 08:20 UTCGHSA enrichment
  11. 2026-08-25 13:49 UTCEPSS rescore
  12. 2026-08-25 08:39 UTCEG score recompute
  13. 2026-08-25 08:39 UTCGHSA enrichment
  14. 2026-08-24 08:57 UTCGHSA enrichment
  15. 2026-08-23 09:17 UTCGHSA enrichment
  16. 2026-08-22 09:37 UTCEG score recompute
  17. 2026-08-22 09:37 UTCGHSA enrichment
  18. 2026-08-21 23:49 UTCEPSS rescore
  19. 2026-08-21 09:56 UTCEG score recompute
  20. 2026-08-21 09:56 UTCGHSA enrichment
  21. 2026-08-20 22:55 UTCEPSS rescore
  22. 2026-08-20 10:15 UTCEG score recompute
  23. 2026-08-20 10:15 UTCGHSA enrichment
  24. 2026-08-19 17:04 UTCEPSS rescore
  25. 2026-08-19 10:35 UTCEG score recompute
Show 66 more
  1. 2026-08-19 10:34 UTCGHSA enrichment
  2. 2026-08-18 13:48 UTCEPSS rescore
  3. 2026-08-18 10:53 UTCEG score recompute
  4. 2026-08-18 10:53 UTCGHSA enrichment
  5. 2026-08-17 13:47 UTCEPSS rescore
  6. 2026-08-17 11:12 UTCEG score recompute
  7. 2026-08-17 11:12 UTCGHSA enrichment
  8. 2026-08-16 14:56 UTCEPSS rescore
  9. 2026-08-16 11:32 UTCEG score recompute
  10. 2026-08-16 11:32 UTCGHSA enrichment
  11. 2026-08-15 11:52 UTCEG score recompute
  12. 2026-08-15 11:52 UTCGHSA enrichment
  13. 2026-08-15 01:30 UTCEPSS rescore
  14. 2026-08-14 12:11 UTCEG score recompute
  15. 2026-08-14 12:11 UTCGHSA enrichment
  16. 2026-08-13 22:00 UTCEPSS rescore
  17. 2026-08-13 12:31 UTCEG score recompute
  18. 2026-08-13 12:31 UTCGHSA enrichment
  19. 2026-08-12 13:51 UTCEPSS rescore
  20. 2026-08-12 12:51 UTCEG score recompute
  21. 2026-08-12 12:51 UTCGHSA enrichment
  22. 2026-08-11 13:10 UTCEG score recompute
  23. 2026-08-11 13:10 UTCGHSA enrichment
  24. 2026-08-11 00:00 UTCEPSS rescore
  25. 2026-08-10 13:30 UTCGHSA enrichment
  26. 2026-08-09 13:49 UTCEG score recompute
  27. 2026-08-09 13:49 UTCGHSA enrichment
  28. 2026-08-09 13:47 UTCEPSS rescore
  29. 2026-08-08 16:37 UTCEPSS rescore
  30. 2026-08-08 14:09 UTCEG score recompute
  31. 2026-08-08 14:09 UTCGHSA enrichment
  32. 2026-08-07 14:28 UTCGHSA enrichment
  33. 2026-08-06 14:48 UTCEG score recompute
  34. 2026-08-06 14:48 UTCGHSA enrichment
  35. 2026-08-06 13:47 UTCEPSS rescore
  36. 2026-08-05 19:17 UTCEPSS rescore
  37. 2026-08-05 19:17 UTCEPSS rescore
  38. 2026-08-05 15:07 UTCGHSA enrichment
  39. 2026-08-04 15:27 UTCEG score recompute
  40. 2026-08-04 15:27 UTCGHSA enrichment
  41. 2026-08-04 15:10 UTCEPSS rescore
  42. 2026-08-04 10:39 UTCEPSS rescore
  43. 2026-08-03 15:47 UTCEG score recompute
  44. 2026-08-03 15:47 UTCGHSA enrichment
  45. 2026-08-03 10:36 UTCEPSS rescore
  46. 2026-08-02 16:06 UTCEG score recompute
  47. 2026-08-02 16:06 UTCGHSA enrichment
  48. 2026-08-02 02:27 UTCEPSS rescore
  49. 2026-08-01 16:26 UTCEG score recompute
  50. 2026-08-01 16:26 UTCGHSA enrichment
  51. 2026-08-01 04:16 UTCEPSS rescore
  52. 2026-07-31 16:46 UTCGHSA enrichment
  53. 2026-07-30 17:05 UTCEG score recompute
  54. 2026-07-30 17:05 UTCGHSA enrichment
  55. 2026-07-30 16:28 UTCEPSS rescore
  56. 2026-07-30 15:04 UTCEG score recompute
  57. 2026-07-30 15:04 UTCGHSA enrichment
  58. 2026-07-30 01:30 UTCEPSS rescore
  59. 2026-07-30 01:30 UTCEPSS rescore
  60. 2026-07-29 15:24 UTCEG score recompute
  61. 2026-07-29 15:23 UTCGHSA enrichment
  62. 2026-07-29 14:48 UTCEG score recompute
  63. 2026-07-29 14:48 UTCGHSA enrichment
  64. 2026-07-29 07:35 UTCEG score recompute
  65. 2026-07-29 06:39 UTCEG score recompute
  66. 2026-07-29 06:37 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-63240?
CVE-2026-63240 is a medium vulnerability published on July 29, 2026. An information disclosure vulnerability in Koollab LMS allowed an authenticated learner to obtain correct quiz answers from the course status endpoint without completing the assessment legitimately, compromising the integrity of assessments.
When was CVE-2026-63240 disclosed?
CVE-2026-63240 was first published in the National Vulnerability Database on July 29, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63240 actively exploited?
CVE-2026-63240 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 92.8% of all scored CVEs.
What is the CVSS score of CVE-2026-63240?
CVE-2026-63240 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-63240?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63240, 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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