UBUNTU-CVE-2026-55677

Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path preserving %2F as-is, while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an...

CVE-2026-55677

Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path preserving %2F as-is, while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an...

CVE-2026-55677

Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path preserving %2F as-is, while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an...

PT-2026-52855

Name of the Vulnerable Software and Affected Versions Echo versions prior to 4.15.3 Echo versions prior to 5.2.0 Description A discrepancy exists between the router and the static file handler regarding URL path decoding. The router matches routes using the raw encoded path, preserving %2F as-is,...

Linux Distros Unpatched Vulnerability : CVE-2026-6321

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - fast-uri decoded percent-encoded path separators and dot segments before applying dot-segment removal in its normalize and equal functions. Encoded path data wa...

Rack:: Static header_rules bypass via URL-encoded paths

Summary Rack::Staticapplicablerules evaluates several headerrules types against the raw URL-encoded PATHINFO, while the underlying file-serving path is decoded before the file is served. As a result, a request for a URL-encoded variant of a static path can serve the same file without the headers...

CVE-2026-34786 Rack: Rack::Static header_rules bypass via URL-encoded paths

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Staticapplicablerules evaluates several headerrules types against the raw URL-encoded PATHINFO, while the underlying file-serving path is decoded before the file is served. As a result, a request for a...

Fedora 43 : cpp-httplib (2026-e76feaf213)

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-e76feaf213 advisory. Update to 0.38.0 rhbz2447261 - Filename sanitization for path traversal prevention Added sanitizefilename to prevent path traversal attacks via malicious...

Fedora 44 : cpp-httplib (2026-03599f0b32)

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-03599f0b32 advisory. Update to 0.38.0 rhbz2447261 - Filename sanitization for path traversal prevention Added sanitizefilename to prevent path traversal attacks via malicious...

GHSA-WC8C-QW6V-H7F6 @hono/node-server has authorization bypass for protected static paths via encoded slashes in Serve Static Middleware

Summary When using @hono/node-server's static file serving together with route-based middleware protections e.g. protecting /admin/, inconsistent URL decoding can allow protected static resources to be accessed without authorization. In particular, paths containing encoded slashes %2F may be...

CVE-2025-50900

An issue was discovered in getrebuild/rebuild 4.0.4. The affected source code class is com.rebuild.web.RebuildWebInterceptor, and the affected function is preHandle In the filter code, use CodecUtils.urlDecoderequest.getRequestURI to obtain the URL-decoded request path, and then determine whether...

Linux Distros Unpatched Vulnerability : CVE-2024-6162

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A vulnerability was found in Undertow, where URL-encoded request paths can be mishandled during concurrent requests on the AJP listener. This issue arises becau...

Undertow AjpRequestParser DoS

The vulnerability of the AjpRequestParser class in the ajp-listener component of the Undertow web server is related to an uncontrolled resource consumption due to incorrect decoding of request paths. Exploiting this vulnerability can allow a malicious actor to cause service failures...

DEBIAN-CVE-2024-6162

A vulnerability was found in Undertow, where URL-encoded request paths can be mishandled during concurrent requests on the AJP listener. This issue arises because the same buffer is used to decode the paths for multiple requests simultaneously, leading to incorrect path information being processe...

undertow: url-encoded request path information can be broken on ajp-listener

A vulnerability was found in Undertow, where URL-encoded request paths can be mishandled during concurrent requests on the AJP listener. This issue arises because the same buffer is used to decode the paths for multiple requests simultaneously, leading to incorrect path information being processe...

PT-2023-9531

Name of the Vulnerable Software and Affected Versions Undertow affected versions not specified Description A vulnerability in Undertow's ajp-listener component is related to uncontrolled resource consumption due to incorrect decoding of request path information. This issue arises because the same...

PT-2021-18253 · Envoy · Envoy

Name of the Vulnerable Software and Affected Versions: Envoy versions 1.18.2 and earlier Description: Envoy does not decode escaped slash sequences %2F and %5C in HTTP URL paths. A remote attacker may craft a path with escaped slashes, e.g. /something%2F..%2Fadmin, to bypass access control, e.g. ...