CVE-2020-36993

MEDIUMPre-NVD 5.46.4▲
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-01-28. the CNA's CVSS baseline 5.4; sources differ by 1.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
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: 5.4Exploit: Elevated riskExposed: 0

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

LimeSurvey 4.3.10 contains a stored cross-site scripting vulnerability in the Survey Menu functionality of the administration panel. Attackers can inject malicious SVG scripts through the Surveymenu[title] and Surveymenu[parent_id] parameters to execute arbitrary JavaScript in administrative contexts.

CVSS v3
5.4
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
19%
KEV
Not listed

Published

January 28, 2026

Last Modified

June 23, 2026

Advisory Details (4)

Auto-updated Aug 9, 2026
🔬 Proof of concept available. Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

LimeSurvey <= 4.3.10 - 'Survey Menu' Persistent Cross-Site Scripting | Advisories | VulnCheck

https://www.vulncheck.com/advisories/limesurvey-survey-menu-persistent-cross-site-scripting
github_commit

commit 3712854a8fd8 (LimeSurvey/LimeSurvey)

Fix landed in LimeSurvey/LimeSurvey commit 3712854a8fd8 — awaiting tagged release

https://github.com/LimeSurvey/LimeSurvey/commit/3712854a8fd8d875c67640969a1d54c4d93d3676
generic

LimeSurvey — Free Online Survey Tool

https://www.limesurvey.org
generic🟡 PoC Available

LimeSurvey 4.3.10 - 'Survey Menu' Persistent Cross-Site Scripting - PHP webapps Exploit

https://www.exploit-db.com/exploits/48762

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 26× 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 150 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2020-36993?
CVE-2020-36993 is a medium vulnerability published on January 28, 2026. LimeSurvey 4.3.10 contains a stored cross-site scripting vulnerability in the Survey Menu functionality of the administration panel. Attackers can inject malicious SVG scripts through the Surveymenu[title] and Surveymenu[parent_id] parameters to execute arbitrary JavaScript in administrative…
When was CVE-2020-36993 disclosed?
CVE-2020-36993 was first published in the National Vulnerability Database on January 28, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-36993 actively exploited?
CVE-2020-36993 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 81.3% of all scored CVEs.
What is the CVSS score of CVE-2020-36993?
CVE-2020-36993 has a CVSS v4.0 base score of 5.4 (CNA self-assessment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.4.
How do I remediate CVE-2020-36993?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-36993, 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.

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