CVE-2026-52844

Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, on Windows, Caddy path matchers treat /private\secret.txt as outside /private/, but fileserver later resolves the same request path as private\secret.txt on disk. An unauthenticated remote client can bypass Caddy...

CVE-2026-52844 Caddy: Windows `file_server` path authorization bypass via encoded backslash

Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, on Windows, Caddy path matchers treat /private\secret.txt as outside /private/, but fileserver later resolves the same request path as private\secret.txt on disk. An unauthenticated remote client can bypass Caddy...

CVE-2026-52844

CVE-2026-52844 describes a Windows-specific path handling bug in Caddy prior to 2.11.4 where path matchers do not normalize backslashes, causing a request like /private%5csecret.txt to bypass path-scoped auth and reach the protected file, e.g., /private/*, through file_server. The issue is exploi...

EUVD-2026-38557

Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, on Windows, Caddy path matchers treat /private\secret.txt as outside /private/, but fileserver later resolves the same request path as private\secret.txt on disk. An unauthenticated remote client can bypass Caddy...

CVE-2026-52846 Caddy: stripHTML template function bypass

Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, Caddy’s stripHTML template function cannot reliably remove all HTML tags from input strings. Certain malformed HTML, such as img src=x onerror=alert, can bypass the tag-stripping logic, potentially leaving dangerous...

CVE-2026-52846

Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, Caddy’s stripHTML template function cannot reliably remove all HTML tags from input strings. Certain malformed HTML, such as img src=x onerror=alert, can bypass the tag-stripping logic, potentially leaving dangerous...

CVE-2026-52846

Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, Caddy’s stripHTML template function cannot reliably remove all HTML tags from input strings. Certain malformed HTML, such as img src=x onerror=alert, can bypass the tag-stripping logic, potentially leaving dangerous...

CVE-2026-52846

Summary: CVE-2026-52846 affects Caddy's stripHTML template function, which cannot reliably strip certain malformed HTML (e.g., <img src=x onerror=alert()>). This can bypass tag-stripping and may enable client-side XSS when untrusted strings are rendered as HTML. The issue originates in func...

CVE-2026-52846 Caddy: stripHTML template function bypass

Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, Caddy’s stripHTML template function cannot reliably remove all HTML tags from input strings. Certain malformed HTML, such as img src=x onerror=alert, can bypass the tag-stripping logic, potentially leaving dangerous...

GHSA-VCC4-2C75-VC9V Caddy: stripHTML template function bypass

Summary Caddy’s stripHTML template function cannot reliably remove all HTML tags from input strings. Certain malformed HTML, such as img src=x onerror=alert, can bypass the tag-stripping logic, potentially leaving dangerous content in the output if it is later rendered as HTML. This may allow...

Caddy: stripHTML template function bypass

Summary Caddy’s stripHTML template function cannot reliably remove all HTML tags from input strings. Certain malformed HTML, such as img src=x onerror=alert, can bypass the tag-stripping logic, potentially leaving dangerous content in the output if it is later rendered as HTML. This may allow...

Caddy: Windows `file_server` path authorization bypass via encoded backslash

Summary On Windows, Caddy path matchers treat /private\secret.txt as outside /private/, but fileserver later resolves the same request path as private\secret.txt on disk. An unauthenticated remote client can request /private%5csecret.txt and bypass Caddy path-scoped auth/deny routes protecting...

GHSA-QRP7-CVWR-J2C6 Caddy: Windows `file_server` path authorization bypass via encoded backslash

Summary On Windows, Caddy path matchers treat /private\secret.txt as outside /private/, but fileserver later resolves the same request path as private\secret.txt on disk. An unauthenticated remote client can request /private%5csecret.txt and bypass Caddy path-scoped auth/deny routes protecting...

PT-2026-50162

Name of the Vulnerable Software and Affected Versions Caddy versions prior to 2.11.4 Description Caddy is an extensible server platform that uses TLS by default. The stripHTML template function, specifically within the funcStripHTML function, cannot reliably remove all HTML tags from input string...

PT-2026-50160

Name of the Vulnerable Software and Affected Versions Caddy versions prior to 2.11.4 Description On Windows, a mismatch exists between how Caddy path matchers and the file server handle request paths. The MatchPath.MatchWithError function compares the r.URL.Path using URL path semantics and does...

FreeBSD : caddy -- multiple vulnerabilities (94f93681-6775-11f1-8044-002590af0794)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 94f93681-6775-11f1-8044-002590af0794 advisory. Caddy project reports: Caddy 2.11.4 contains multiple security fixes. GitHub Security Advisory...

Low: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: caddy: caddy-2.11.4-0.1.hum1 aarch64, x8664 caddy-2.11.4-0.1.hum1.src src...

CVE-2026-52844

creationtimestamp| type| source ---|---|--- 2026-06-08 22:24:46+00:00| published-proof-of-concept| https://github.com/caddyserver/caddy/security/advisories/GHSA-qrp7-cvwr-j2c6 2026-06-23 20:05:07+00:00| seen| https://bsky.app/profile/cve.skyfleet.blue/post/3moy756hrqk2r 2026-06-23 23:10:58+00:00|...

CVE-2026-52846

creationtimestamp| type| source ---|---|--- 2026-06-08 22:24:11+00:00| published-proof-of-concept| https://github.com/caddyserver/caddy/security/advisories/GHSA-vcc4-2c75-vc9v 2026-06-23 20:15:32+00:00| seen| https://bsky.app/profile/cve.skyfleet.blue/post/3moy7pw3teh25...

GHSA-3H23-RRPC-3P87 Caddy Defender trusted proxy client IP bypass

Impact Caddy Defender used r.RemoteAddr when evaluating whether a request should be blocked. RemoteAddr is the address of the immediate peer connected to Caddy. In deployments where Caddy is behind a trusted proxy, CDN, or load balancer, the immediate peer is usually the proxy, not the original...