CVE-2021-46250

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 1.1% (63rd percentile of EPSS-scored CVEs). 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
10.0EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.1%CVSS: 10.0Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

An issue in SOA2Login::commented of ScratchOAuth2 before commit a91879bd58fa83b09283c0708a1864cdf067c64a allows attackers to authenticate as other users on downstream components that rely on ScratchOAuth2.

CVSS v3
10.0
EG Score
10.0CRITICALmedium confidence
EG Risk
50
EG Risk 50/100CISA 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
Severity100% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: An upstream fix is merged but not yet in a tagged release. 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 until it ships, then apply the release.
EPSS PROB
1.1%
EPSS %ILE
63rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. 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 until it ships, then apply the release.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 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

February 15, 2022

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Oct 3, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
github_commit

commit a91879bd58fa (ScratchVerifier/ScratchOAuth2)

Fix landed in ScratchVerifier/ScratchOAuth2 commit a91879bd58fa — awaiting tagged release

https://github.com/ScratchVerifier/ScratchOAuth2/commit/a91879bd58fa83b09283c0708a1864cdf067c64a

Data Freshness Timeline

(refreshed 8× in last 7d / 30× 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 177 total refreshes for this CVE.

  1. 2026-10-05 17:40 UTCEPSS rescore
  2. 2026-10-04 23:19 UTCEPSS rescore
  3. 2026-10-03 14:22 UTCEPSS rescore
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  6. 2026-09-30 15:44 UTCEG score recompute
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  1. 2026-09-11 14:49 UTCEPSS rescore
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  5. 2026-09-06 13:45 UTCEPSS rescore
  6. 2026-09-05 21:00 UTCOSV refresh
  7. 2026-09-05 15:25 UTCEPSS rescore
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  9. 2026-09-04 05:03 UTCEPSS rescore
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  21. 2026-08-19 17:01 UTCEPSS rescore
  22. 2026-08-19 07:59 UTCOSV refresh
  23. 2026-08-18 13:45 UTCEPSS rescore
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  39. 2026-08-03 10:33 UTCEPSS rescore
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  42. 2026-07-30 16:25 UTCEPSS rescore
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  48. 2026-07-24 14:15 UTCEPSS rescore
  49. 2026-07-23 14:16 UTCEPSS rescore
  50. 2026-07-23 02:06 UTCEG score recompute
  51. 2026-07-22 22:52 UTCEG score recompute
  52. 2026-07-22 14:06 UTCEPSS rescore
  53. 2026-07-21 15:22 UTCEPSS rescore
  54. 2026-07-21 15:22 UTCEPSS rescore
  55. 2026-07-20 17:05 UTCEPSS rescore
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  59. 2026-07-18 10:02 UTCEPSS rescore
  60. 2026-07-17 22:59 UTCOSV refresh
  61. 2026-07-16 17:00 UTCEPSS rescore
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  63. 2026-07-15 16:55 UTCEPSS rescore
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  66. 2026-07-13 22:27 UTCEPSS rescore
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  69. 2026-07-12 05:44 UTCEPSS rescore
  70. 2026-07-11 08:25 UTCEPSS rescore
  71. 2026-07-09 19:07 UTCEPSS rescore
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  73. 2026-07-08 15:12 UTCEPSS rescore
  74. 2026-07-08 15:12 UTCEPSS rescore
  75. 2026-07-07 13:43 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-46250?
CVE-2021-46250 is a critical vulnerability published on February 15, 2022. An issue in SOA2Login::commented of ScratchOAuth2 before commit a91879bd58fa83b09283c0708a1864cdf067c64a allows attackers to authenticate as other users on downstream components that rely on ScratchOAuth2.
When was CVE-2021-46250 disclosed?
CVE-2021-46250 was first published on February 15, 2022, 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-2021-46250 actively exploited?
CVE-2021-46250 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.1% probability of exploitation in the next 30 days (63rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2021-46250?
CVE-2021-46250 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2021-46250?
An upstream fix for CVE-2021-46250 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix.

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