CVE-2020-5810

HIGHNVD 5.47.5▲
EchelonGraph scoreHIGH confidence

Score elevated to 7.5 because EPSS predicts 62% probability of exploitation within the next 30 days (99th percentile of EPSS-scored CVEs). NVD baseline CVSS 5.4 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Elevated
7.5EG
EchelonGraph verdictMitigate this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 62%
CISA-KEV: Not listedEPSS PROB: 62%CVSS: 5.4Exploit: Elevated riskExposed services: Not assessed

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

A stored XSS vulnerability exists in Umbraco CMS <= 8.9.1 or current. An authenticated user authorized to upload media can upload a malicious .svg file which act as a stored XSS payload.

CVSS v3
5.4
EG Score
7.5HIGHhigh confidence
EG Risk
63
EG Risk 63/100CISA 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
Severity75% × 45%
Exploitation62% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend 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 at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
62%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend 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 at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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

December 30, 2020

Last Modified

November 21, 2024

References (2)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 22× 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 133 total refreshes for this CVE.

  1. 2026-10-05 17:40 UTCEPSS rescore
  2. 2026-10-03 14:22 UTCEPSS rescore
  3. 2026-10-03 14:22 UTCEPSS rescore
  4. 2026-10-02 16:22 UTCEPSS rescore
  5. 2026-10-01 19:46 UTCEPSS rescore
  6. 2026-09-30 15:21 UTCEG score recompute▼ 0.30
  7. 2026-09-30 14:59 UTCEPSS rescore
  8. 2026-09-27 13:41 UTCEPSS rescore
  9. 2026-09-26 15:54 UTCEPSS rescore
  10. 2026-09-26 15:54 UTCEPSS rescore
  11. 2026-09-26 15:25 UTCOSV refresh
  12. 2026-09-24 14:00 UTCEPSS rescore
  13. 2026-09-22 14:44 UTCEPSS rescore
  14. 2026-09-21 20:28 UTCEPSS rescore
  15. 2026-09-18 19:23 UTCEPSS rescore
  16. 2026-09-17 19:22 UTCEPSS rescore
  17. 2026-09-16 14:04 UTCEPSS rescore
  18. 2026-09-15 03:06 UTCEPSS rescore
  19. 2026-09-12 14:57 UTCEPSS rescore
  20. 2026-09-08 21:56 UTCEPSS rescore
  21. 2026-09-07 01:18 UTCOSV refresh
  22. 2026-09-06 13:44 UTCEPSS rescore
  23. 2026-09-05 15:25 UTCEPSS rescore
  24. 2026-09-04 13:57 UTCEPSS rescore
  25. 2026-09-04 13:57 UTCEPSS rescore
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  1. 2026-09-02 14:08 UTCEPSS rescore
  2. 2026-09-01 03:32 UTCEPSS rescore
  3. 2026-08-30 19:14 UTCEPSS rescore
  4. 2026-08-30 01:19 UTCEPSS rescore
  5. 2026-08-28 21:37 UTCEPSS rescore
  6. 2026-08-27 14:21 UTCEPSS rescore
  7. 2026-08-26 14:42 UTCEPSS rescore
  8. 2026-08-21 23:45 UTCEPSS rescore
  9. 2026-08-20 11:01 UTCOSV refresh
  10. 2026-08-19 17:00 UTCEPSS rescore
  11. 2026-08-18 13:44 UTCEPSS rescore
  12. 2026-08-17 13:43 UTCEPSS rescore
  13. 2026-08-17 13:43 UTCEPSS rescore
  14. 2026-08-16 14:52 UTCEPSS rescore
  15. 2026-08-16 02:11 UTCEPSS rescore
  16. 2026-08-15 01:27 UTCEPSS rescore
  17. 2026-08-13 21:57 UTCEPSS rescore
  18. 2026-08-12 13:47 UTCEPSS rescore
  19. 2026-08-07 16:23 UTCEPSS rescore
  20. 2026-08-06 13:43 UTCEPSS rescore
  21. 2026-08-05 06:40 UTCOSV refresh
  22. 2026-08-04 10:34 UTCEPSS rescore
  23. 2026-07-30 16:25 UTCEPSS rescore
  24. 2026-07-30 01:27 UTCEPSS rescore
  25. 2026-07-28 15:33 UTCEPSS rescore
  26. 2026-07-26 14:52 UTCEPSS rescore
  27. 2026-07-25 14:15 UTCEPSS rescore
  28. 2026-07-24 14:15 UTCEPSS rescore
  29. 2026-07-23 14:15 UTCEPSS rescore
  30. 2026-07-23 01:54 UTCEG score recompute▲ 2.40
  31. 2026-07-22 22:40 UTCEG score recompute
  32. 2026-07-22 14:05 UTCEPSS rescore
  33. 2026-07-21 15:22 UTCEPSS rescore
  34. 2026-07-21 15:22 UTCEPSS rescore
  35. 2026-07-20 17:04 UTCEPSS rescore
  36. 2026-07-20 17:04 UTCEPSS rescore
  37. 2026-07-19 04:52 UTCOSV refresh
  38. 2026-07-19 02:26 UTCEPSS rescore
  39. 2026-07-19 02:26 UTCEPSS rescore
  40. 2026-07-16 17:00 UTCEPSS rescore
  41. 2026-07-15 16:55 UTCEPSS rescore
  42. 2026-07-15 16:55 UTCEPSS rescore
  43. 2026-07-13 22:27 UTCEPSS rescore
  44. 2026-07-13 22:27 UTCEPSS rescore
  45. 2026-07-13 06:10 UTCEPSS rescore
  46. 2026-07-13 06:10 UTCEPSS rescore
  47. 2026-07-12 05:44 UTCEPSS rescore
  48. 2026-07-12 05:44 UTCEPSS rescore
  49. 2026-07-11 08:25 UTCEPSS rescore
  50. 2026-07-11 08:25 UTCEPSS rescore
  51. 2026-07-09 19:07 UTCEPSS rescore
  52. 2026-07-06 02:21 UTCEPSS rescore
  53. 2026-07-06 02:21 UTCEPSS rescore
  54. 2026-07-04 06:29 UTCEPSS rescore
  55. 2026-07-04 06:29 UTCEPSS rescore
  56. 2026-07-01 15:03 UTCEPSS rescore
  57. 2026-07-01 11:33 UTCOSV refresh
  58. 2026-06-28 04:54 UTCEPSS rescore
  59. 2026-06-28 04:54 UTCEPSS rescore
  60. 2026-06-25 13:48 UTCEPSS rescore
  61. 2026-06-25 13:48 UTCEPSS rescore
  62. 2026-06-24 14:03 UTCEPSS rescore
  63. 2026-06-24 14:03 UTCEPSS rescore
  64. 2026-06-23 21:31 UTCEPSS rescore
  65. 2026-06-23 21:31 UTCEPSS rescore
  66. 2026-06-21 01:57 UTCEPSS rescore
  67. 2026-06-21 01:57 UTCEPSS rescore
  68. 2026-06-17 17:50 UTCEPSS rescore
  69. 2026-06-16 17:50 UTCEPSS rescore
  70. 2026-06-15 17:46 UTCEPSS rescore
  71. 2026-06-14 23:15 UTCEPSS rescore
  72. 2026-06-13 22:58 UTCEPSS rescore
  73. 2026-06-13 22:58 UTCEPSS rescore
  74. 2026-06-13 18:13 UTCOSV refresh
  75. 2026-06-12 23:10 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2020-5810?
CVE-2020-5810 is a high vulnerability published on December 30, 2020. A stored XSS vulnerability exists in Umbraco CMS <= 8.9.1 or current. An authenticated user authorized to upload media can upload a malicious .svg file which act as a stored XSS payload.
When was CVE-2020-5810 disclosed?
CVE-2020-5810 was first published on December 30, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-5810 actively exploited?
CVE-2020-5810 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 62% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2020-5810?
CVE-2020-5810 has a CVSS v3 base score of 5.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.5 (HIGH).
How do I remediate CVE-2020-5810?
No fix for CVE-2020-5810 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.

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