Missing brute-force protection in github.com/greenpau/caddy-security
Priority LOW 30CWE-307Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-307.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00535 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | github.com/greenpau/caddy-security | all versions | — | No fix listed | CNA |
| — | github.com/greenpau/caddy-security (Go) | up to 1.1.23 | — | No fix listed | GHSA-vfph-hjfv-cpv2 |
- github.com/greenpau/caddy-security Vendor— Affected all versions Fixed in — No fix listed CNA
- github.com/greenpau/caddy-security (Go) Vendor— Affected up to 1.1.23 Fixed in — No fix listed GHSA-vfph-hjfv-cpv2
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:authcrunch:caddy-security:*:*:*:*:*:*:*:* | all versions | Vulnerable | Authcrunch |
- cpe:2.3:a:authcrunch:caddy-security:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Authcrunch
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-21500
- 2026-10-03 Alias added: GHSA-vfph-hjfv-cpv2
References
More Authcrunch Caddy-security vulnerabilities
- TI-2023-28778 The caddy-security plugin 1.1.20 for Caddy allows reflected XSS via a GET request to a… CVSS 3.1MEDIUM 6.1
- TI-2024-14249 Insufficient session expiration in github.com/greenpau/caddy-security CVSS 3.1HIGH 8.1
- TI-2024-14255 Server-side request forgery in github.com/greenpau/caddy-security CVSS 3.1MEDIUM 5.3
- TI-2024-14253 Cross-site scripting in github.com/greenpau/caddy-security CVSS 3.1MEDIUM 6.1
Sources
- CVE-2024-21500 · CVE Program
- CVE-2024-21500 · NVD
- FIRST EPSS
- GHSA-vfph-hjfv-cpv2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences