Medium severity4.8GHSA Advisory· Published Feb 17, 2024· Updated Jun 17, 2026
CVE-2024-21500
CVE-2024-21500
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/greenpau/caddy-securityGo | <= 1.1.23 | — |
Affected products
2- Range: <= 1.1.23
Patches
Vulnerability mechanics
References
7- blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy/nvdExploitThird Party Advisory
- github.com/advisories/GHSA-vfph-hjfv-cpv2ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2024-21500ghsaADVISORY
- security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249864nvdThird Party AdvisoryWEB
- github.com/greenpau/caddy-securityghsaPACKAGE
- blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddyghsaWEB
- github.com/greenpau/caddy-security/issues/271nvdIssue TrackingWEB
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