Technology · Go
github.com/caddyserver/caddy/v2 (Go) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 22 vulnerabilities in github.com/caddyserver/caddy/v2 (Go): 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-77281, was published on 17 September 2026.
- Last 7 days
- 0
- Last 90 days
- 3
- 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-2026-77281: Caddy placeholder re-expansion in URI rewritemediumCVSS 6.5EPSS 0.5%
- GO-2026-5408 - Caddy: Remote Admin Authorization Bypass on PKI Endpoints via Prefix-Based Path Matching in github.com/caddyserver/caddyinfo
- GO-2026-5730 - Caddy Fix Bypass in github.com/caddyserver/caddyinfo
- 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
- Caddy: Remote Admin Authorization Bypass on PKI Endpoints via Prefix-Based Path MatchinglowCVSS 3.1
- Caddyserver Caddy expression language injection in vars_regexpmediumCVSS 5.5
- Caddy Fix BypassmediumCVSS 4
- 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-2026-27589: GO-2026-4537 - Caddy is vulnerable to cross-origin config application via local admin API /load in…mediumCVSS 4EPSS 0.2%
- 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%
- CVE-2026-27587: GO-2026-4538 - Caddy MatchPath %xx branch skips case normalization in github.com/caddyserver/caddy/v2mediumCVSS 4EPSS 0.5%
- CVE-2026-27586: GO-2026-4539 - Caddy mTLS authentication fails open in github.com/caddyserver/caddy/v2mediumCVSS 4EPSS 0.4%
- CVE-2026-27585: GO-2026-4535 - Improper sanitization of glob characters in github.com/caddyserver/caddy/v2mediumCVSS 4EPSS 0.4%
- 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
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 2 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 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 |
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, 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, 26 September 2026.