{"schema_version":1,"title":"github.com/caddyserver/caddy/v2 (Go) vulnerabilities","summary":"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.","url":"https://junglewise.ai/threats/technologies/github-com-caddyserver-caddy-v2","json_url":"https://junglewise.ai/threats/technologies/github-com-caddyserver-caddy-v2.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/github-com-caddyserver-caddy-v2","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":3,"all_time":22,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":1,"last_90_days":3,"last_365_days":20},"latest":[{"cve":"CVE-2026-77281","cvss":6.5,"epss":0.0049,"slug":"cve-2026-77281-caddy-placeholder-re-expansion-in-uri-rewrite","title":"Caddy placeholder re-expansion in URI rewrite","severity":"medium","exploited":false,"published_at":"2026-09-17T21:17:37.89+00:00","url":"https://junglewise.ai/threats/cve-2026-77281-caddy-placeholder-re-expansion-in-uri-rewrite"},{"slug":"go-2026-5408-caddy-remote-admin-authorization-bypass-on-pki-endpoints-4c5e1b8e","title":"GO-2026-5408 - Caddy: Remote Admin Authorization Bypass on PKI Endpoints via Prefix-Based Path Matching in github.com/caddyserver/caddy","severity":"info","exploited":false,"published_at":"2026-07-24T18:35:55+00:00","url":"https://junglewise.ai/threats/go-2026-5408-caddy-remote-admin-authorization-bypass-on-pki-endpoints-4c5e1b8e"},{"slug":"go-2026-5730-caddy-fix-bypass-in-github-com-caddyserver-caddy-baf17ba5","title":"GO-2026-5730 - Caddy Fix Bypass in github.com/caddyserver/caddy","severity":"info","exploited":false,"published_at":"2026-07-24T18:35:55+00:00","url":"https://junglewise.ai/threats/go-2026-5730-caddy-fix-bypass-in-github-com-caddyserver-caddy-baf17ba5"},{"cve":"CVE-2026-52846","cvss":4.2,"epss":0.0025,"slug":"cve-2026-52846-caddyserver-caddy-xss-bypass-in-striphtml-template-function","title":"Caddyserver Caddy XSS bypass in stripHTML template function","severity":"medium","exploited":false,"published_at":"2026-06-23T18:18:05.4+00:00","url":"https://junglewise.ai/threats/cve-2026-52846-caddyserver-caddy-xss-bypass-in-striphtml-template-function"},{"cve":"CVE-2026-52845","cvss":8.1,"epss":0.0045,"slug":"cve-2026-52845-caddy-authentication-bypass-via-fastcgi-header-normalization","title":"Caddy authentication bypass via FastCGI header normalization collision","severity":"high","exploited":false,"published_at":"2026-06-23T18:18:05.267+00:00","url":"https://junglewise.ai/threats/cve-2026-52845-caddy-authentication-bypass-via-fastcgi-header-normalization"},{"cve":"CVE-2026-52844","cvss":7.5,"epss":0.0062,"slug":"cve-2026-52844-caddy-path-authorization-bypass-on-windows-via-encoded-backslash","title":"Caddy path authorization bypass on Windows via encoded backslash","severity":"high","exploited":false,"published_at":"2026-06-23T18:18:05.137+00:00","url":"https://junglewise.ai/threats/cve-2026-52844-caddy-path-authorization-bypass-on-windows-via-encoded-backslash"},{"cve":"CVE-2026-45692","cvss":5.4,"epss":0.0024,"slug":"cve-2026-45692-caddyserver-caddy-authorization-bypass-in-config-api-via-array","title":"Caddyserver Caddy authorization bypass in /config API via array index normalization","severity":"medium","exploited":false,"published_at":"2026-06-23T18:17:59.08+00:00","url":"https://junglewise.ai/threats/cve-2026-45692-caddyserver-caddy-authorization-bypass-in-config-api-via-array"},{"cve":"CVE-2026-45135","cvss":8.1,"epss":0.0068,"slug":"cve-2026-45135-caddyserver-caddy-remote-code-execution-in-fastcgi-splitpos","title":"Caddyserver Caddy Remote Code Execution in FastCGI splitPos","severity":"high","exploited":false,"published_at":"2026-06-23T18:17:52.343+00:00","url":"https://junglewise.ai/threats/cve-2026-45135-caddyserver-caddy-remote-code-execution-in-fastcgi-splitpos"},{"cvss":4.3,"slug":"caddy-auth-bypass-in-pki-remote-admin-endpoints-7ca83725","title":"Caddy auth bypass in PKI remote admin endpoints","severity":"medium","exploited":false,"published_at":"2026-05-19T19:36:13+00:00","url":"https://junglewise.ai/threats/caddy-auth-bypass-in-pki-remote-admin-endpoints-7ca83725"},{"cvss":3.1,"slug":"caddy-remote-admin-authorization-bypass-on-pki-endpoints-via-prefix-3008aba9","title":"Caddy: Remote Admin Authorization Bypass on PKI Endpoints via Prefix-Based Path Matching","severity":"low","exploited":false,"published_at":"2026-05-19T19:36:13+00:00","url":"https://junglewise.ai/threats/caddy-remote-admin-authorization-bypass-on-pki-endpoints-via-prefix-3008aba9"},{"cvss":5.5,"slug":"caddyserver-caddy-expression-language-injection-in-vars-regexp-c26de985","title":"Caddyserver Caddy expression language injection in vars_regexp","severity":"medium","exploited":false,"published_at":"2026-05-19T19:35:47+00:00","url":"https://junglewise.ai/threats/caddyserver-caddy-expression-language-injection-in-vars-regexp-c26de985"},{"cvss":4,"slug":"caddy-fix-bypass-285f49ed","title":"Caddy Fix Bypass","severity":"medium","exploited":false,"published_at":"2026-05-19T19:35:47+00:00","url":"https://junglewise.ai/threats/caddy-fix-bypass-285f49ed"},{"cve":"CVE-2026-30851","cvss":3.1,"epss":0.0035,"slug":"cve-2026-30851-caddy-forward-auth-copy-headers-does-not-strip-client-supplied","title":"GO-2026-4639 - Caddy forward_auth copy_headers allows Identity Injection and Privilege Escalation in github.com/caddyserver/caddy","severity":"low","exploited":false,"published_at":"2026-03-10T18:28:25+00:00","url":"https://junglewise.ai/threats/cve-2026-30851-caddy-forward-auth-copy-headers-does-not-strip-client-supplied"},{"cve":"CVE-2026-30852","cvss":4,"epss":0.0049,"slug":"cve-2026-30852-caddy-s-vars-regexp-double-expands-user-input-leaking-env-vars","title":"GO-2026-4644 - Caddy's vars_regexp double-expands user input, leaking env vars and files in github.com/caddyserver/caddy","severity":"medium","exploited":false,"published_at":"2026-03-10T18:28:25+00:00","url":"https://junglewise.ai/threats/cve-2026-30852-caddy-s-vars-regexp-double-expands-user-input-leaking-env-vars"},{"cve":"CVE-2026-27589","cvss":4,"epss":0.0024,"slug":"cve-2026-27589-caddy-is-vulnerable-to-cross-origin-config-application-via-local","title":"GO-2026-4537 - Caddy is vulnerable to cross-origin config application via local admin API /load in github.com/caddyserver/caddy/v2","severity":"medium","exploited":false,"published_at":"2026-02-26T16:27:51+00:00","url":"https://junglewise.ai/threats/cve-2026-27589-caddy-is-vulnerable-to-cross-origin-config-application-via-local"},{"cve":"CVE-2026-27590","cvss":4,"epss":0.0086,"slug":"cve-2026-27590-caddy-unicode-case-folding-length-expansion-causes-incorrect","title":"GO-2026-4536 - Unicode case-folding causes incorrect split_path index in github.com/caddyserver/caddy/v2","severity":"medium","exploited":false,"published_at":"2026-02-26T16:27:51+00:00","url":"https://junglewise.ai/threats/cve-2026-27590-caddy-unicode-case-folding-length-expansion-causes-incorrect"},{"cve":"CVE-2026-27588","cvss":4,"epss":0.0054,"slug":"cve-2026-27588-caddy-matchhost-becomes-case-sensitive-for-large-host-lists-100","title":"GO-2026-4541 - Caddy MatchHost becomes case-sensitive in github.com/caddyserver/caddy/v2","severity":"medium","exploited":false,"published_at":"2026-02-26T16:27:51+00:00","url":"https://junglewise.ai/threats/cve-2026-27588-caddy-matchhost-becomes-case-sensitive-for-large-host-lists-100"},{"cve":"CVE-2026-27587","cvss":4,"epss":0.0054,"slug":"cve-2026-27587-caddy-matchpath-xx-escaped-path-branch-skips-case-normalization","title":"GO-2026-4538 - Caddy MatchPath %xx branch skips case normalization in github.com/caddyserver/caddy/v2","severity":"medium","exploited":false,"published_at":"2026-02-26T16:27:51+00:00","url":"https://junglewise.ai/threats/cve-2026-27587-caddy-matchpath-xx-escaped-path-branch-skips-case-normalization"},{"cve":"CVE-2026-27586","cvss":4,"epss":0.004,"slug":"cve-2026-27586-caddy-mtls-client-authentication-silently-fails-open-when-ca","title":"GO-2026-4539 - Caddy mTLS authentication fails open in github.com/caddyserver/caddy/v2","severity":"medium","exploited":false,"published_at":"2026-02-26T16:27:51+00:00","url":"https://junglewise.ai/threats/cve-2026-27586-caddy-mtls-client-authentication-silently-fails-open-when-ca"},{"cve":"CVE-2026-27585","cvss":4,"epss":0.0041,"slug":"cve-2026-27585-caddy-improper-sanitization-of-glob-characters-in-file-matcher","title":"GO-2026-4535 - Improper sanitization of glob characters in github.com/caddyserver/caddy/v2","severity":"medium","exploited":false,"published_at":"2026-02-26T16:27:51+00:00","url":"https://junglewise.ai/threats/cve-2026-27585-caddy-improper-sanitization-of-glob-characters-in-file-matcher"},{"cve":"CVE-2022-28923","cvss":3.1,"epss":0.0143,"slug":"cve-2022-28923-open-redirect-in-caddy","title":"GO-2023-1567 - Open redirect in github.com/caddyserver/caddy/v2","severity":"low","exploited":false,"published_at":"2023-02-16T18:37:09+00:00","url":"https://junglewise.ai/threats/cve-2022-28923-open-redirect-in-caddy"},{"cve":"CVE-2022-29718","cvss":3.1,"epss":0.0103,"slug":"cve-2022-29718-open-redirect-in-caddy","title":"Open redirect in caddy","severity":"low","exploited":false,"published_at":"2022-06-03T00:00:29+00:00","url":"https://junglewise.ai/threats/cve-2022-29718-open-redirect-in-caddy"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":2},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"github.com/mattermost/mattermost-server (Go)","slug":"github-com-mattermost-mattermost-server","vulnerabilities":274,"url":"https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server"},{"name":"github.com/mattermost/mattermost-server/v6 (Go)","slug":"github-com-mattermost-mattermost-server-v6","vulnerabilities":188,"url":"https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v6"},{"name":"github.com/mattermost/mattermost-server/v5 (Go)","slug":"github-com-mattermost-mattermost-server-v5","vulnerabilities":186,"url":"https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v5"},{"name":"github.com/mattermost/mattermost/server/v8 (Go)","slug":"github-com-mattermost-mattermost-server-v8","vulnerabilities":182,"url":"https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v8"},{"name":"stdlib (Go)","slug":"go-stdlib","vulnerabilities":161,"url":"https://junglewise.ai/threats/technologies/go-stdlib"},{"name":"github.com/siyuan-note/siyuan/kernel (Go)","slug":"github-com-siyuan-note-siyuan-kernel","vulnerabilities":158,"url":"https://junglewise.ai/threats/technologies/github-com-siyuan-note-siyuan-kernel"},{"name":"code.gitea.io/gitea (Go)","slug":"code-gitea-io-gitea","vulnerabilities":128,"url":"https://junglewise.ai/threats/technologies/code-gitea-io-gitea"},{"name":"gogs.io/gogs (Go)","slug":"gogs-io-gogs","vulnerabilities":82,"url":"https://junglewise.ai/threats/technologies/gogs-io-gogs"},{"name":"github.com/traefik/traefik (Go)","slug":"github-com-traefik-traefik","vulnerabilities":75,"url":"https://junglewise.ai/threats/technologies/github-com-traefik-traefik"},{"name":"github.com/usememos/memos (Go)","slug":"github-com-usememos-memos","vulnerabilities":75,"url":"https://junglewise.ai/threats/technologies/github-com-usememos-memos"},{"name":"github.com/traefik/traefik/v2 (Go)","slug":"github-com-traefik-traefik-v2","vulnerabilities":73,"url":"https://junglewise.ai/threats/technologies/github-com-traefik-traefik-v2"},{"name":"github.com/traefik/traefik/v3 (Go)","slug":"github-com-traefik-traefik-v3","vulnerabilities":68,"url":"https://junglewise.ai/threats/technologies/github-com-traefik-traefik-v3"}],"technology":{"hub":true,"name":"github.com/caddyserver/caddy/v2 (Go)","slug":"github-com-caddyserver-caddy-v2","vendor":{"name":"Go","slug":"go","url":"https://junglewise.ai/threats/vendors/go"},"aliases":[],"homepage":"https://caddyserver.com/","repo_url":"https://github.com/caddyserver/caddy","description":"An extensible, open-source web server written in Go with automatic HTTPS support.","url":"https://junglewise.ai/threats/technologies/github-com-caddyserver-caddy-v2"},"most_severe":[{"cve":"CVE-2026-45135","cvss":8.1,"epss":0.0068,"slug":"cve-2026-45135-caddyserver-caddy-remote-code-execution-in-fastcgi-splitpos","title":"Caddyserver Caddy Remote Code Execution in FastCGI splitPos","severity":"high","exploited":false,"published_at":"2026-06-23T18:17:52.343+00:00","url":"https://junglewise.ai/threats/cve-2026-45135-caddyserver-caddy-remote-code-execution-in-fastcgi-splitpos"},{"cve":"CVE-2026-52845","cvss":8.1,"epss":0.0045,"slug":"cve-2026-52845-caddy-authentication-bypass-via-fastcgi-header-normalization","title":"Caddy authentication bypass via FastCGI header normalization collision","severity":"high","exploited":false,"published_at":"2026-06-23T18:18:05.267+00:00","url":"https://junglewise.ai/threats/cve-2026-52845-caddy-authentication-bypass-via-fastcgi-header-normalization"},{"cve":"CVE-2026-52844","cvss":7.5,"epss":0.0062,"slug":"cve-2026-52844-caddy-path-authorization-bypass-on-windows-via-encoded-backslash","title":"Caddy path authorization bypass on Windows via encoded backslash","severity":"high","exploited":false,"published_at":"2026-06-23T18:18:05.137+00:00","url":"https://junglewise.ai/threats/cve-2026-52844-caddy-path-authorization-bypass-on-windows-via-encoded-backslash"},{"cve":"CVE-2026-77281","cvss":6.5,"epss":0.0049,"slug":"cve-2026-77281-caddy-placeholder-re-expansion-in-uri-rewrite","title":"Caddy placeholder re-expansion in URI rewrite","severity":"medium","exploited":false,"published_at":"2026-09-17T21:17:37.89+00:00","url":"https://junglewise.ai/threats/cve-2026-77281-caddy-placeholder-re-expansion-in-uri-rewrite"},{"cvss":5.5,"slug":"caddyserver-caddy-expression-language-injection-in-vars-regexp-c26de985","title":"Caddyserver Caddy expression language injection in vars_regexp","severity":"medium","exploited":false,"published_at":"2026-05-19T19:35:47+00:00","url":"https://junglewise.ai/threats/caddyserver-caddy-expression-language-injection-in-vars-regexp-c26de985"},{"cve":"CVE-2026-45692","cvss":5.4,"epss":0.0024,"slug":"cve-2026-45692-caddyserver-caddy-authorization-bypass-in-config-api-via-array","title":"Caddyserver Caddy authorization bypass in /config API via array index normalization","severity":"medium","exploited":false,"published_at":"2026-06-23T18:17:59.08+00:00","url":"https://junglewise.ai/threats/cve-2026-45692-caddyserver-caddy-authorization-bypass-in-config-api-via-array"},{"cvss":4.3,"slug":"caddy-auth-bypass-in-pki-remote-admin-endpoints-7ca83725","title":"Caddy auth bypass in PKI remote admin endpoints","severity":"medium","exploited":false,"published_at":"2026-05-19T19:36:13+00:00","url":"https://junglewise.ai/threats/caddy-auth-bypass-in-pki-remote-admin-endpoints-7ca83725"},{"cve":"CVE-2026-52846","cvss":4.2,"epss":0.0025,"slug":"cve-2026-52846-caddyserver-caddy-xss-bypass-in-striphtml-template-function","title":"Caddyserver Caddy XSS bypass in stripHTML template function","severity":"medium","exploited":false,"published_at":"2026-06-23T18:18:05.4+00:00","url":"https://junglewise.ai/threats/cve-2026-52846-caddyserver-caddy-xss-bypass-in-striphtml-template-function"},{"cve":"CVE-2026-27590","cvss":4,"epss":0.0086,"slug":"cve-2026-27590-caddy-unicode-case-folding-length-expansion-causes-incorrect","title":"GO-2026-4536 - Unicode case-folding causes incorrect split_path index in github.com/caddyserver/caddy/v2","severity":"medium","exploited":false,"published_at":"2026-02-26T16:27:51+00:00","url":"https://junglewise.ai/threats/cve-2026-27590-caddy-unicode-case-folding-length-expansion-causes-incorrect"},{"cve":"CVE-2026-27588","cvss":4,"epss":0.0054,"slug":"cve-2026-27588-caddy-matchhost-becomes-case-sensitive-for-large-host-lists-100","title":"GO-2026-4541 - Caddy MatchHost becomes case-sensitive in github.com/caddyserver/caddy/v2","severity":"medium","exploited":false,"published_at":"2026-02-26T16:27:51+00:00","url":"https://junglewise.ai/threats/cve-2026-27588-caddy-matchhost-becomes-case-sensitive-for-large-host-lists-100"}],"generated_at":"2026-09-27T03:07:00.185062+00:00"}