GHSA-V39H-62P7-JPJC fast-uri vulnerable to host confusion via percent-encoded authority delimiters

Impact fast-uri v3.1.1 and earlier decodes percent-encoded authority delimiters %40 as @, %3A as : inside the host component and serializes them back as raw characters. This changes the URI structure, turning a hostname into userinfo plus a different host. For example,...

@activepieces/piece-ai (>=0.3.1, <=0.3.4), @middy/validator (>=5.4.3, <=5.4.4) +4 more potentially affected by CVE-2026-6322 via fast-uri (>=3.0.1, <=3.1.0)

fast-uri NPM version =3.0.1, =0.3.1, =5.4.3, =1.0.0, =1.0.0, =2.2.0, =2.3.1 Source cves: CVE-2026-6322 Source advisory: OSV:GHSA-V39H-62P7-JPJC...

@datastream/validate (>=0.0.4, <=0.0.38), @dearmrzhang/customs-mcp-server (>=0.1.2, <=1.1.0) +15 more potentially affected by CVE-2026-6322 via fast-uri (>=2.1.0, <=2.3.0)

fast-uri NPM version =2.1.0, =0.0.4, =0.1.2, =0.0.1, =0.0.1, =3.1.0-rc.0, =0.2.0, =0.2.0, =0.2.0, =0.0.1, =0.0.0, =1.0.0, =3.0.0, =1.7.0, =1.8.0 and more Source cves: CVE-2026-6322 Source advisory: OSV:GHSA-V39H-62P7-JPJC...

@activepieces/piece-ai (>=0.3.1, <=0.3.4), @middy/validator (>=5.4.3, <=5.4.4) +4 more potentially affected by CVE-2026-6321 via fast-uri (>=3.0.1, <=3.1.0)

fast-uri NPM version =3.0.1, =0.3.1, =5.4.3, =1.0.0, =1.0.0, =2.2.0, =2.3.1 Source cves: CVE-2026-6321 Source advisory: OSV:GHSA-Q3J6-QGPJ-74H6...

EUVD-2026-27129

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

@datastream/validate (>=0.0.4, <=0.0.38), @dearmrzhang/customs-mcp-server (>=0.1.2, <=1.1.0) +15 more potentially affected by CVE-2026-6321 via fast-uri (>=2.1.0, <=2.3.0)

fast-uri NPM version =2.1.0, =0.0.4, =0.1.2, =0.0.1, =0.0.1, =3.1.0-rc.0, =0.2.0, =0.2.0, =0.2.0, =0.0.1, =0.0.0, =1.0.0, =3.0.0, =1.7.0, =1.8.0 and more Source cves: CVE-2026-6321 Source advisory: OSV:GHSA-Q3J6-QGPJ-74H6...

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,...

GHSA-Q3J6-QGPJ-74H6 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,...

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

NPM: fast-uri vulnerable to path traversal via percent-encoded dot segments vulnerability discovered by ? in WordPress Npm fast-uri versions = 3.1.0...

SUSE 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

A flaw was found in fast-uri. A remote attacker could exploit this vulnerability by providing a specially crafted Uniform Resource Locator URL containing percent-encoded path separators and dot segments. Due to incorrect processing, fast-uri would decode these elements before proper normalization...

Interpretation Conflict

Overview org.webjars.npm: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,...

@activepieces/piece-ai (>=0.3.1, <=0.3.4), @middy/validator (>=5.4.3, <=5.4.4) +4 more potentially affected by CVE-2026-6322 via fast-uri (>=3.0.1, <=3.1.0)

fast-uri NPM version =3.0.1, =0.3.1, =5.4.3, =1.0.0, =1.0.0, =2.2.0, =2.3.1 Source cves: CVE-2026-6322 Source advisory: SNYK:JS-FASTURI-16642394...

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 ...

UBUNTU-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 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 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

CVE-2026-6322 affects the fast-uri package. The vuln lies in normalize(): it decodes percent-encoded authority delimiters inside the host and then re-emits them as raw delimiters during serialization. This can cause a host, which combines an allowed domain, an encoded at-sign, and a different dom...

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...

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...