# Caddyserver vulnerabilities

Source: https://junglewise.ai/threats/vendors/caddyserver  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/caddyserver.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 7 vulnerabilities in Caddyserver: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-52846, was published on 23 June 2026. 1 technology has a page of its own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 7 (0 critical, 0 exploited in the wild)

## About Caddyserver

Caddyserver is the developer of the Caddy web server and related networking tools.

## Latest Caddyserver vulnerabilities

- [CVE-2026-52846: Caddyserver Caddy XSS bypass in stripHTML template function](https://junglewise.ai/threats/cve-2026-52846-caddyserver-caddy-xss-bypass-in-striphtml-template-function) (medium, CVSS 4.2, published 23 Jun 2026)
- [CVE-2026-52845: Caddy authentication bypass via FastCGI header normalization collision](https://junglewise.ai/threats/cve-2026-52845-caddy-authentication-bypass-via-fastcgi-header-normalization) (high, CVSS 8.1, published 23 Jun 2026)
- [CVE-2026-52844: Caddy path authorization bypass on Windows via encoded backslash](https://junglewise.ai/threats/cve-2026-52844-caddy-path-authorization-bypass-on-windows-via-encoded-backslash) (high, CVSS 7.5, published 23 Jun 2026)
- [CVE-2026-45692: Caddyserver Caddy authorization bypass in /config API via array index normalization](https://junglewise.ai/threats/cve-2026-45692-caddyserver-caddy-authorization-bypass-in-config-api-via-array) (medium, CVSS 5.4, published 23 Jun 2026)
- [CVE-2026-45135: Caddyserver Caddy Remote Code Execution in FastCGI splitPos](https://junglewise.ai/threats/cve-2026-45135-caddyserver-caddy-remote-code-execution-in-fastcgi-splitpos) (high, CVSS 8.1, published 23 Jun 2026)
- [Caddy auth bypass in PKI remote admin endpoints](https://junglewise.ai/threats/caddy-auth-bypass-in-pki-remote-admin-endpoints-7ca83725) (medium, CVSS 4.3, published 19 May 2026)
- [Caddyserver Caddy expression language injection in vars_regexp](https://junglewise.ai/threats/caddyserver-caddy-expression-language-injection-in-vars-regexp-c26de985) (medium, CVSS 5.5, published 19 May 2026)

## Most severe Caddyserver vulnerabilities

- [CVE-2026-45135: Caddyserver Caddy Remote Code Execution in FastCGI splitPos](https://junglewise.ai/threats/cve-2026-45135-caddyserver-caddy-remote-code-execution-in-fastcgi-splitpos) (high, CVSS 8.1, published 23 Jun 2026)
- [CVE-2026-52845: Caddy authentication bypass via FastCGI header normalization collision](https://junglewise.ai/threats/cve-2026-52845-caddy-authentication-bypass-via-fastcgi-header-normalization) (high, CVSS 8.1, published 23 Jun 2026)
- [CVE-2026-52844: Caddy path authorization bypass on Windows via encoded backslash](https://junglewise.ai/threats/cve-2026-52844-caddy-path-authorization-bypass-on-windows-via-encoded-backslash) (high, CVSS 7.5, published 23 Jun 2026)
- [Caddyserver Caddy expression language injection in vars_regexp](https://junglewise.ai/threats/caddyserver-caddy-expression-language-injection-in-vars-regexp-c26de985) (medium, CVSS 5.5, published 19 May 2026)
- [CVE-2026-45692: Caddyserver Caddy authorization bypass in /config API via array index normalization](https://junglewise.ai/threats/cve-2026-45692-caddyserver-caddy-authorization-bypass-in-config-api-via-array) (medium, CVSS 5.4, published 23 Jun 2026)
- [Caddy auth bypass in PKI remote admin endpoints](https://junglewise.ai/threats/caddy-auth-bypass-in-pki-remote-admin-endpoints-7ca83725) (medium, CVSS 4.3, published 19 May 2026)
- [CVE-2026-52846: Caddyserver Caddy XSS bypass in stripHTML template function](https://junglewise.ai/threats/cve-2026-52846-caddyserver-caddy-xss-bypass-in-striphtml-template-function) (medium, CVSS 4.2, published 23 Jun 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Caddyserver technologies

- [Caddyserver Caddy](https://junglewise.ai/threats/technologies/caddy): 7 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Caddyserver vulnerabilities", https://junglewise.ai/threats/vendors/caddyserver, 9 November 2026.