Technology · Go
github.com/caddyserver/caddy/v2 (Go) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 21 vulnerabilities in github.com/caddyserver/caddy/v2 (Go): 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-55458, was published on 5 November 2026. 1 vulnerability in the last four weeks, level on the four before (1).
- Last 7 days
- 0
- Last 90 days
- 2
- Critical, all time
- 0
- Exploited in the wild
- 0
About github.com/caddyserver/caddy/v2 (Go)
An extensible, open-source web server written in Go with automatic HTTPS support.
Latest github.com/caddyserver/caddy/v2 (Go) vulnerabilities
- CVE-2026-55458: Caddy has an RFC 7230 §6.1 compliance issue / Hop-by-hop headers that leak throughmediumCVSS 4EPSS 0.5%
- CVE-2026-77281: Caddy placeholder re-expansion in URI rewritemediumCVSS 6.5EPSS 0.5%
- GO-2026-5730 - Caddy Fix Bypass in github.com/caddyserver/caddyinfo
- GO-2026-5408 - Caddy: Remote Admin Authorization Bypass on PKI Endpoints via Prefix-Based Path Matching in…info
- CVE-2026-52846: Caddyserver Caddy XSS bypass in stripHTML template functionmediumCVSS 4.2EPSS 0.3%
- CVE-2026-52845: Caddy authentication bypass via FastCGI header normalization collisionhighCVSS 8.1EPSS 0.4%
- CVE-2026-52844: Caddy path authorization bypass on Windows via encoded backslashhighCVSS 7.5EPSS 0.6%
- CVE-2026-45692: Caddyserver Caddy authorization bypass in /config API via array index normalizationmediumCVSS 5.4EPSS 0.2%
- CVE-2026-45135: Caddyserver Caddy Remote Code Execution in FastCGI splitPoshighCVSS 8.1EPSS 0.7%
- Caddy auth bypass in PKI remote admin endpointsmediumCVSS 4.3
- Caddyserver Caddy expression language injection in vars_regexpmediumCVSS 5.5
- CVE-2026-30851: GO-2026-4639 - Caddy forward_auth copy_headers allows Identity Injection and Privilege Escalation in…lowCVSS 3.1EPSS 0.4%
- CVE-2026-30852: GO-2026-4644 - Caddy's vars_regexp double-expands user input, leaking env vars and files in github.com/caddyserver/caddymediumCVSS 4EPSS 0.5%
- CVE-2026-27586: GO-2026-4539 - Caddy mTLS authentication fails open in github.com/caddyserver/caddy/v2mediumCVSS 4EPSS 0.4%
- CVE-2026-27589: Caddy is vulnerable to cross-origin config application via local admin API /loadmediumCVSS 4EPSS 0.2%
- CVE-2026-27587: GO-2026-4538 - Caddy MatchPath %xx branch skips case normalization in github.com/caddyserver/caddy/v2mediumCVSS 4EPSS 0.5%
- CVE-2026-27588: GO-2026-4541 - Caddy MatchHost becomes case-sensitive in github.com/caddyserver/caddy/v2mediumCVSS 4EPSS 0.5%
- CVE-2026-27585: GO-2026-4535 - Improper sanitization of glob characters in github.com/caddyserver/caddy/v2mediumCVSS 4EPSS 0.4%
- CVE-2026-27590: GO-2026-4536 - Unicode case-folding causes incorrect split_path index in github.com/caddyserver/caddy/v2mediumCVSS 4EPSS 0.9%
- CVE-2022-28923: GO-2023-1567 - Open redirect in github.com/caddyserver/caddy/v2lowCVSS 3.1EPSS 1.4%
- CVE-2022-29718: Open redirect in caddylowCVSS 3.1EPSS 1.0%
Most severe github.com/caddyserver/caddy/v2 (Go) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-45135: Caddyserver Caddy Remote Code Execution in FastCGI splitPoshighCVSS 8.1EPSS 0.7%
- CVE-2026-52845: Caddy authentication bypass via FastCGI header normalization collisionhighCVSS 8.1EPSS 0.4%
- CVE-2026-52844: Caddy path authorization bypass on Windows via encoded backslashhighCVSS 7.5EPSS 0.6%
- CVE-2026-77281: Caddy placeholder re-expansion in URI rewritemediumCVSS 6.5EPSS 0.5%
- Caddyserver Caddy expression language injection in vars_regexpmediumCVSS 5.5
- CVE-2026-45692: Caddyserver Caddy authorization bypass in /config API via array index normalizationmediumCVSS 5.4EPSS 0.2%
- Caddy auth bypass in PKI remote admin endpointsmediumCVSS 4.3
- CVE-2026-52846: Caddyserver Caddy XSS bypass in stripHTML template functionmediumCVSS 4.2EPSS 0.3%
- CVE-2026-27590: GO-2026-4536 - Unicode case-folding causes incorrect split_path index in github.com/caddyserver/caddy/v2mediumCVSS 4EPSS 0.9%
- CVE-2026-27588: GO-2026-4541 - Caddy MatchHost becomes case-sensitive in github.com/caddyserver/caddy/v2mediumCVSS 4EPSS 0.5%
Vulnerabilities per week
1 vulnerability in the last four weeks, level on the four before (1). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 1 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 1 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many github.com/caddyserver/caddy/v2 (Go) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/github-com-caddyserver-caddy-v2)<a href="https://junglewise.ai/threats/technologies/github-com-caddyserver-caddy-v2"><img src="https://junglewise.ai/threats/technologies/github-com-caddyserver-caddy-v2/badge.svg" alt="github.com/caddyserver/caddy/v2 (Go) vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/github-com-caddyserver-caddy-v2.json, and this page as text at https://junglewise.ai/threats/technologies/github-com-caddyserver-caddy-v2.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "github.com/caddyserver/caddy/v2 (Go) vulnerabilities", https://junglewise.ai/threats/technologies/github-com-caddyserver-caddy-v2, 13 November 2026.