CVE-2020-28273

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 3.9%, top 11% of all CVEs by exploit prediction. 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, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 4%CVSS: 9.8Exploit: NoneExposed: 0

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

Prototype pollution vulnerability in 'set-in' versions 1.0.0 through 2.0.0 allows attacker to cause a denial of service and may lead to remote code execution.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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
Severity98% × 45%
Exploitation4% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
89.1%
KEV
Not listed

Published

December 2, 2020

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jul 7, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

CVE-2020-28273 | Mend Vulnerability Database

https://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28273
generic

Open Source Vulnerability Database | Mend.io

https://www.whitesourcesoftware.com/vulnerability-database
github_commit

commit e431effa0019 (ahdinosaur/set-in)

Fix landed in ahdinosaur/set-in commit e431effa0019 — awaiting tagged release

https://github.com/ahdinosaur/set-in/commit/e431effa00195a6f06b111e09733cd1445a91a88

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
set-in—2.0.1—

Data Freshness Timeline

(refreshed 12× in last 7d / 42× 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. 2026-07-23 01:52 UTCEG score recompute
  2. 2026-07-22 22:38 UTCEG score recompute
  3. 2026-07-22 14:05 UTCEPSS rescore
  4. 2026-07-21 15:22 UTCEPSS rescore
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  16. 2026-07-13 22:27 UTCEPSS rescore
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  18. 2026-07-12 22:37 UTCOSV refresh
  19. 2026-07-12 05:44 UTCEPSS rescore
  20. 2026-07-11 08:25 UTCEPSS rescore
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  22. 2026-07-09 19:07 UTCEPSS rescore
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  1. 2026-07-06 16:25 UTCEPSS rescore
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  8. 2026-06-28 04:54 UTCEPSS rescore
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  10. 2026-06-27 03:06 UTCEPSS rescore
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  12. 2026-06-25 13:48 UTCEPSS rescore
  13. 2026-06-24 14:03 UTCEPSS rescore
  14. 2026-06-24 14:03 UTCEPSS rescore
  15. 2026-06-24 08:20 UTCOSV refresh
  16. 2026-06-23 21:31 UTCEPSS rescore
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  18. 2026-06-22 14:23 UTCEPSS rescore
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  22. 2026-06-21 01:57 UTCEPSS rescore
  23. 2026-06-19 19:24 UTCEPSS rescore
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  25. 2026-06-18 17:50 UTCEPSS rescore
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  27. 2026-06-17 17:50 UTCEPSS rescore
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  29. 2026-06-15 17:46 UTCEPSS rescore
  30. 2026-06-14 23:15 UTCEPSS rescore
  31. 2026-06-13 22:58 UTCEPSS rescore
  32. 2026-06-12 23:10 UTCEPSS rescore
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  35. 2026-06-10 13:20 UTCEPSS rescore
  36. 2026-06-07 15:23 UTCEPSS rescore
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  38. 2026-06-07 15:23 UTCEPSS rescore
  39. 2026-06-07 11:59 UTCOSV refresh
  40. 2026-06-06 13:46 UTCEPSS rescore
  41. 2026-06-06 13:45 UTCEPSS rescore
  42. 2026-06-05 22:45 UTCEPSS rescore
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  44. 2026-06-05 06:08 UTCEPSS rescore
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  46. 2026-06-04 13:10 UTCEPSS rescore
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  48. 2026-06-02 20:11 UTCEPSS rescore
  49. 2026-06-02 20:11 UTCEPSS rescore
  50. 2026-05-31 22:29 UTCEPSS rescore
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  52. 2026-05-31 00:15 UTCEPSS rescore
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  54. 2026-05-29 13:42 UTCEPSS rescore
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  57. 2026-05-27 13:39 UTCEPSS rescore
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  59. 2026-05-26 07:17 UTCEPSS rescore
  60. 2026-05-26 07:17 UTCEPSS rescore
  61. 2026-05-23 04:44 UTCEG score recompute

Frequently asked(5)

What is CVE-2020-28273?
CVE-2020-28273 is a critical vulnerability published on December 2, 2020. Prototype pollution vulnerability in 'set-in' versions 1.0.0 through 2.0.0 allows attacker to cause a denial of service and may lead to remote code execution.
When was CVE-2020-28273 disclosed?
CVE-2020-28273 was first published in the National Vulnerability Database on December 2, 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-2020-28273 actively exploited?
CVE-2020-28273 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-28273?
CVE-2020-28273 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-28273?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-28273, 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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