CVE-2024-21500

MEDIUMNVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

Score 4.8 from GitHub Security Advisory published 2024-02-17. NVD baseline CVSS 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 4.8Exploit: NoneExposed: 0

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

All versions of the package github.com/greenpau/caddy-security are vulnerable to Improper Restriction of Excessive Authentication Attempts via the two-factor authentication (2FA). Although the application blocks the user after several failed attempts to provide 2FA codes, attackers can bypass this blocking mechanism by automating the application’s full multistep 2FA process.

CVSS v3
4.8
EG Score
4.8(medium)
EG Risk
—
EPSS
41.9%
KEV
Not listed

Published

February 17, 2024

Last Modified

April 3, 2025

References (6)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
gogithub.com/greenpau/caddy-security—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/greenpau/caddy-security———

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 46× 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 105 total refreshes for this CVE.

  1. 2026-07-22 23:20 UTCEG score recompute
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Frequently asked(5)

What is CVE-2024-21500?
CVE-2024-21500 is a medium vulnerability published on February 17, 2024. All versions of the package github.com/greenpau/caddy-security are vulnerable to Improper Restriction of Excessive Authentication Attempts via the two-factor authentication (2FA). Although the application blocks the user after several failed attempts to provide 2FA codes, attackers can bypass this…
When was CVE-2024-21500 disclosed?
CVE-2024-21500 was first published in the National Vulnerability Database on February 17, 2024, with the most recent update on April 3, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-21500 actively exploited?
CVE-2024-21500 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-21500?
CVE-2024-21500 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2024-21500?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-21500, 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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