CVE-2026-84394: Interpretation Conflict

fast-uri accepts a host that contains an unbalanced or misplaced authority bracket without reporting an error. A host that starts with an opening bracket but does not end with a closing bracket is neither validated as an IP literal nor canonicalized as a domain name, so parse returns it as the ho...

PT-2026-85045

Label Studio fails to apply organization filters when resolving storage URIs for tasks and projects in proxy api.py endpoints. Attackers can access other tenants' cloud storage objects by creating a separate organization and supplying arbitrary file URIs to presign or stream bucket contents...

PT-2026-90916

TuxCare rebuilt fast-uri to address 4 CVEs. Fixed in 2.4.3-tuxcare.2...

Host Confusion

Overview fast-uri is a Dependency-free RFC 3986 URI toolbox Affected versions of this package are vulnerable to Host Confusion in the parse function, which returns a host that begins with but has no closing , such as @127.0.0.1, without validating it as an IPv6 literal or canonicalizing it as a...

@leviyuan/lodestar (>=0.17.1, <=0.19.5), @openai/codex-security (>=0.1.26, <=0.1.27) +6 more potentially affected by CVE-2026-84394 via fast-uri (3.1.6)

fast-uri NPM version 3.1.6 is affected by a known vulnerability. The following packages have a transitive dependency on fast-uri and may be impacted: - @leviyuan/lodestar =0.17.1, =0.1.26, =0.55.0-beta.11, =0.55.0-beta.11, =0.55.0-beta.11, =1.4.35, =0.1.13, =4.7.12, =4.7.14 Source cves:...

Improper Encoding or Escaping of Output

Overview org.webjars.npm:fast-uri is a Dependency-free RFC 3986 URI toolbox Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output that enables authority injection in the recomposeAuthority function, which escapes the userinfo and host components but...

Improper Encoding or Escaping of Output

Overview fast-uri is a Dependency-free RFC 3986 URI toolbox Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output that enables authority injection in the recomposeAuthority function, which escapes the userinfo and host components but concatenates the port fie...

@activepieces/piece-ai (>=0.3.1, <=0.3.4), @diviops/mcp-server (>=1.5.40, <=1.5.43) +32 more potentially affected by CVE-2026-84292 via fast-uri (>=3.0.1, <=3.1.6)

fast-uri NPM version =3.0.1, =0.3.1, =1.5.40, =1.6.0, =1.4.2, =1.2.0, =0.17.1, =5.4.3, =0.2.0-alpha.5, =0.1.0, =0.1.27 and more Source cves: CVE-2026-84292 Source advisory: SNYK:JS-FASTURI-19502739...

@datastream/validate (>=0.0.4, <=0.0.38), @dearmrzhang/customs-mcp-server (>=0.1.2, <=1.1.0) +15 more potentially affected by CVE-2026-84292 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-2026-84292 Source advisory: SNYK:JS-FASTURI-19502739...

org.webjars.npm:ajv (>=8.17.1, <=8.20.0), org.webjars.npm:ajv-formats (>=2.1.1, <=3.0.1) +19 more potentially affected by CVE-2026-84292 via org.webjars.npm:fast-uri (3.1.8)

org.webjars.npm:fast-uri MAVEN version 3.1.8 is affected by a known vulnerability. The following packages have a transitive dependency on org.webjars.npm:fast-uri and may be impacted: - org.webjars.npm:ajv =8.17.1, =2.1.1, =0.1902.8, =19.2.8, =19.2.8, =2.0.44, =0.10.434, =0.3.16, =0.10.14, =0.25....

CVE-2026-84394

A flaw was found in fast-uri. The library incorrectly processes Uniform Resource Identifier URI hosts containing unbalanced brackets, leading to a discrepancy in how the host is parsed by fast-uri compared to other HTTP clients. This host confusion can allow an attacker to bypass security policie...

CVE-2026-84292

A flaw was found in fast-uri. This component improperly serializes the port component of a Uniform Resource Identifier URI without validating its content. A remote attacker can exploit this by crafting a malicious port value that injects authority delimiters. This manipulation can demote the...

CVE-2026-84394

fast-uri accepts a host that contains an unbalanced or misplaced authority bracket without reporting an error. A host that starts with an opening bracket but does not end with a closing bracket is neither validated as an IP literal nor canonicalized as a domain name, so parse returns it as the ho...

CVE-2026-84394 fast-uri vulnerable to host confusion via an unclosed bracket in the URI authority

fast-uri accepts a host that contains an unbalanced or misplaced authority bracket without reporting an error. A host that starts with an opening bracket but does not end with a closing bracket is neither validated as an IP literal nor canonicalized as a domain name, so parse returns it as the ho...

CVE-2026-84394 fast-uri vulnerable to host confusion via an unclosed bracket in the URI authority

fast-uri accepts a host that contains an unbalanced or misplaced authority bracket without reporting an error. A host that starts with an opening bracket but does not end with a closing bracket is neither validated as an IP literal nor canonicalized as a domain name, so parse returns it as the ho...

CVE-2026-84394

fast-uri accepts a host that contains an unbalanced or misplaced authority bracket without reporting an error. A host that starts with an opening bracket but does not end with a closing bracket is neither validated as an IP literal nor canonicalized as a domain name, so parse returns it as the ho...

CVE-2026-84394 fast-uri vulnerable to host confusion via an unclosed bracket in the URI authority

fast-uri accepts a host that contains an unbalanced or misplaced authority bracket without reporting an error. A host that starts with an opening bracket but does not end with a closing bracket is neither validated as an IP literal nor canonicalized as a domain name, so parse returns it as the ho...

CVE-2026-84394

fast-uri (a URI parsing library used by the Fastify ecosystem) contains a host confusion vulnerability: when a URI's authority contains an opening bracket [ without a matching closing bracket ], parse() returns the string as the host without error. Neither an IP literal nor a valid domain name is...

@leviyuan/lodestar (>=0.17.1, <=0.19.5), @openai/codex-security (>=0.1.26, <=0.1.27) +6 more potentially affected by CVE-2026-84394 via fast-uri (3.1.6)

fast-uri NPM version 3.1.6 is affected by a known vulnerability. The following packages have a transitive dependency on fast-uri and may be impacted: - @leviyuan/lodestar =0.17.1, =0.1.26, =0.55.0-beta.11, =0.55.0-beta.11, =0.55.0-beta.11, =1.4.35, =0.1.13, =4.7.12, =4.7.14 Source cves:...

CVE-2026-84292

fast-uri serializes the port component of a URI without validating it. When recomposing the authority, the userinfo and host components are escaped but the port is concatenated verbatim, so a port value that is not a sequence of digits can inject authority delimiters, demoting the intended host t...