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CVE-2024-21500

MEDIUM
Published 2024-02-17T05:00:06.899Z
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CVSS Score

V3.1
4.8
/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.090
Higher than 9.0% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
LOW
Integrity
LOW
Availability
NONE

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed MODERATE

Improper Restriction of Excessive Authentication Attempts in github.com/greenpau/caddy-security

GHSA-vfph-hjfv-cpv2

Advisory Details

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.

Affected Packages

Go github.com/greenpau/caddy-security
ECOSYSTEM: ≥0 ≤1.1.23

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-21500
WEB https://github.com/greenpau/caddy-security/issues/271
WEB https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy
WEB https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249864
PACKAGE github.com/greenpau/caddy-security

Advisory provided by GitHub Security Advisory Database. Published: February 17, 2024, Modified: April 4, 2025

References

https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249864
https://github.com/greenpau/caddy-security/issues/271
https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy/
Published: 2024-02-17T05:00:06.899Z
Last Modified: 2024-12-05T20:33:44.652Z
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