fast-uri vulnerable to path traversal via percent-encoded dot segments

Impact fast-uri v3.1.0 and earlier decodes percent-encoded path separators %2F and dot segments %2E before applying dot-segment removal in normalize and equal. This makes encoded path data behave like real / and .., so distinct URIs collapse onto the same normalized path. For example,...

Nitro has a proxy scope bypass via percent-encoded path traversal in `routeRules`

A proxy route rule like: ts routeRules: "/api/orders/": proxy: to: "http://upstream/orders/" is intended to limit the proxy to URLs under /api/orders/. Before the patch, an attacker could bypass that scope by sending percent-encoded path traversal ..%2f in the URL, causing Nitro to forward a...

S3-Proxy has Security Issues in its Resource Path Matching Implementation

Background The original concern is functional: a resource pattern should treat a percent-encoded segment like some%2Fvalue as a single opaque token rather than splitting it into two path segments at the decoded /. Investigation into why %2F was being decoded and how routes matched against the...

Interpretation Conflict

Overview fast-uri is a Dependency-free RFC 3986 URI toolbox Affected versions of this package are vulnerable to Interpretation Conflict during the decoding of URL host component. An attacker can manipulate the authority component of a URI by supplying percent-encoded delimiters, causing the host ...

CVE-2026-6322

fast-uri normalize decoded percent-encoded authority delimiters inside the host component and then re-emitted them as raw delimiters during serialization. A host that combined an allowed domain, an encoded at-sign, and a different domain was re-emitted with the at-sign as a raw userinfo separator...

CVE-2026-6322 fast-uri vulnerable to host confusion via percent-encoded authority delimiters

fast-uri normalize decoded percent-encoded authority delimiters inside the host component and then re-emitted them as raw delimiters during serialization. A host that combined an allowed domain, an encoded at-sign, and a different domain was re-emitted with the at-sign as a raw userinfo separator...

Directory Traversal

Overview org.webjars.npm:fast-uri is a Dependency-free RFC 3986 URI toolbox Affected versions of this package are vulnerable to Directory Traversal via the normalize or equal functions. An attacker can bypass path-based access controls by submitting specially crafted percent-encoded or dot segmen...

Directory Traversal

Overview fast-uri is a Dependency-free RFC 3986 URI toolbox Affected versions of this package are vulnerable to Directory Traversal via the normalize or equal functions. An attacker can bypass path-based access controls by submitting specially crafted percent-encoded or dot segments in URLs,...

DEBIAN-CVE-2026-6321

fast-uri decoded percent-encoded path separators and dot segments before applying dot-segment removal in its normalize and equal functions. Encoded path data was treated like real slashes and parent-directory references, so distinct URIs could collapse onto the same normalized path. Applications...

CVE-2026-6321

Affected software: fast-uri. Vulnerability: percent-encoded path separators and dot segments are decoded before dot‑segment removal in normalize() and equal() so encoded data is treated like real slashes and parent directories, allowing distinct URIs to normalize to the same path. Impact: applica...

CVE-2026-6321 fast-uri vulnerable to path traversal via percent-encoded dot segments

fast-uri decoded percent-encoded path separators and dot segments before applying dot-segment removal in its normalize and equal functions. Encoded path data was treated like real slashes and parent-directory references, so distinct URIs could collapse onto the same normalized path. Applications...

CVE-2026-6321 fast-uri vulnerable to path traversal via percent-encoded dot segments

fast-uri decoded percent-encoded path separators and dot segments before applying dot-segment removal in its normalize and equal functions. Encoded path data was treated like real slashes and parent-directory references, so distinct URIs could collapse onto the same normalized path. Applications...

JLSEC-2026-389

The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host name part of a URL, making it a different URL usingthe wrong host name when it is later retrieved.For example, a URL like http://example.com%2F127.0.0.1/, would be allowed bythe parser and get...

fast-uri 路径遍历漏洞

fast-uri is an open-source, dependency-free RFC 3986 URI parser and toolkit developed by Fastify. Versions of fast-uri 3.1.0 and earlier contained a path traversal vulnerability. This vulnerability stemmed from the normalize and equal functions decoding percent-encoded path separators and dots,...

PT-2026-36919

Name of the Vulnerable Software and Affected Versions fast-uri versions prior to 3.1.1 Description The normalize and equal functions decode percent-encoded path separators and dot segments before performing dot-segment removal. This causes encoded path data to be treated as actual slashes and...

Improper Access Control

Caddy is vulnerable to Improper Access Control. The vulnerability is due to incorrect case-insensitive matching in the HTTP path request matcher when percent-encoded sequences are present, allowing attackers to alter request path casing and bypass path-based routing or attached access controls...

Traefik < 2.11.43 / 3.x < 3.6.14 Multiple Vulnerabilities

The version of Traefik installed on the remote macOS host is prior to 2.11.43 or 3.x prior to 3.6.14. It is, therefore, affected by multiple vulnerabilities: - An authentication bypass via StripPrefixRegex and ForwardAuth dot-segment normalization. When StripPrefixRegex processes URLs with...

Exploit for Command Injection in Github Enterprise_Server

CVE-2026-3854 PoC — GitHub RCE via X-Stat Push Option Injectio...

Improper Input Encoding

Axios is vulnerable to Improper Input Encoding. The vulnerability is due to incorrect character mapping in the encode function, where safely percent-encoded null bytes %00 are converted back to raw null bytes, potentially leading to unsafe request data handling in affected usage scenarios...

CVE-2026-42040

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, the encode function in lib/helpers/AxiosURLSearchParams.js contains a character mapping charMap at line 21 that reverses the safe percent-encoding of null bytes. After encodeURIComponent'\x00' correctly...