CVE-2021-41230

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.8%, top 46% 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
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.3Exploit: NoneExposed: 0

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

Pomerium is an open source identity-aware access proxy. In affected versions changes to the OIDC claims of a user after initial login are not reflected in policy evaluation when using allowed_idp_claims as part of policy. If using allowed_idp_claims and a user's claims are changed, Pomerium can make incorrect authorization decisions. This issue has been resolved in v0.15.6. For users unable to upgrade clear data on databroker service by clearing redis or restarting the in-memory databroker to force claims to be updated.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity53% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
53.9%
KEV
Not listed

Published

November 5, 2021

Last Modified

November 21, 2024

References (4)

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/pomerium/pomerium—0.15.6—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 47× 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 109 total refreshes for this CVE.

  1. 2026-07-25 14:15 UTCEPSS rescore
  2. 2026-07-23 14:16 UTCEPSS rescore
  3. 2026-07-23 02:04 UTCEG score recompute
  4. 2026-07-22 22:50 UTCEG score recompute
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  13. 2026-07-18 08:29 UTCOSV refresh
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  1. 2026-07-09 19:07 UTCEPSS rescore
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  16. 2026-06-30 07:00 UTCOSV refresh
  17. 2026-06-29 14:04 UTCEPSS rescore
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  27. 2026-06-23 21:31 UTCEPSS rescore
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  45. 2026-06-13 22:58 UTCEPSS rescore
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  47. 2026-06-12 23:10 UTCEPSS rescore
  48. 2026-06-12 17:10 UTCOSV refresh
  49. 2026-06-11 13:58 UTCEPSS rescore
  50. 2026-06-11 13:58 UTCEPSS rescore
  51. 2026-06-10 22:16 UTCEPSS rescore
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  53. 2026-06-10 13:20 UTCEPSS rescore
  54. 2026-06-08 14:15 UTCEPSS rescore
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  73. 2026-05-29 13:42 UTCEPSS rescore
  74. 2026-05-28 13:43 UTCEPSS rescore
  75. 2026-05-28 13:43 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2021-41230?
CVE-2021-41230 is a medium vulnerability published on November 5, 2021. Pomerium is an open source identity-aware access proxy. In affected versions changes to the OIDC claims of a user after initial login are not reflected in policy evaluation when using allowedidpclaims as part of policy. If using allowedidpclaims and a user's claims are changed, Pomerium can make…
When was CVE-2021-41230 disclosed?
CVE-2021-41230 was first published in the National Vulnerability Database on November 5, 2021, 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-2021-41230 actively exploited?
CVE-2021-41230 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-41230?
CVE-2021-41230 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2021-41230?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-41230, 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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