CVE-2021-47962

MEDIUMNVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-05-15. NVD baseline CVSS 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.4Exploit: Elevated riskExposed: 0

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

Savsoft Quiz 5.0 contains a persistent cross-site scripting vulnerability in the user account settings page that allows authenticated attackers to inject malicious HTML and JavaScript code. Attackers can inject script payloads into user profile fields at the edit_user endpoint, which execute in the browsers of users viewing the affected profile after submission.

CVSS v3
6.4
EG Score
6.4(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity64% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

May 15, 2026

Last Modified

May 24, 2026

Advisory Details (4)

Auto-updated May 18, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Savsoft Quiz 5.0 Persistent Cross-Site Scripting via User Settings | Advisories | VulnCheck

https://www.vulncheck.com/advisories/savsoft-quiz-persistent-cross-site-scripting-via-user-settings
generic🟡 PoC Available

Savsoft Quiz 5 - 'User Account Settings' Persistent Cross-Site Scripting - PHP webapps Exploit

https://www.exploit-db.com/exploits/49825
generic

Savsoft Quiz - The Ultimate Open Source Online Exam Solution

https://savsoftquiz.com
generic

GitHub - savsofts/savsoftquiz_v5: Create & manage online quizzes, tests & exams on your website or server with many eLearning features · GitHub

https://github.com/savsofts/savsoftquiz_v5

Vendor Advisories for CVE-2021-47962(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 6× in last 7d / 51× 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 230 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2021-47962?
CVE-2021-47962 is a medium vulnerability published on May 15, 2026. Savsoft Quiz 5.0 contains a persistent cross-site scripting vulnerability in the user account settings page that allows authenticated attackers to inject malicious HTML and JavaScript code. Attackers can inject script payloads into user profile fields at the edit_user endpoint, which execute in the…
When was CVE-2021-47962 disclosed?
CVE-2021-47962 was first published in the National Vulnerability Database on May 15, 2026, with the most recent update on May 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-47962 actively exploited?
CVE-2021-47962 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 84.7% of all scored CVEs.
What is the CVSS score of CVE-2021-47962?
CVE-2021-47962 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2021-47962?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47962, 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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