Vulnerabilities in pkg:npm/srvx

PACKAGE
Advisory Identifier: GHSA-p36q-q72m-gchr
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Advisory Summary

CVE-2026-33732 is a MODERATE (CVSS 4.8) srvx is vulnerable to middleware vulnerability (CWE-706: Use of Incorrectly-Resolved Name or Reference) affecting Srvx libraries in the npm ecosystem. The issue involves srvx is vulnerable to middleware bypass via absolute uri in request line. Remediation is available by upgrading affected packages to version 0.11.13.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/srvx

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/srvx. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-p36q-q72m-gchr CVE-2026-33732 MODERATE srvx is vulnerable to middleware bypass via absolute URI in request line

CVE-2026-33732 at a Glance

CVE Identifier CVE-2026-33732
GHSA Identifier GHSA-p36q-q72m-gchr
Severity MODERATE
CVSS v3.1 Base Score 4.8
CWE Classification CWE-706: Use of Incorrectly-Resolved Name or Reference
Affected Product Srvx
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 4.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-33732

To remediate this vulnerability, upgrade all affected Srvx dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

srvx fixed: 0.11.13 
npm install srvx@0.11.13
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls srvx

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-33732, inspect your project dependencies using npm:

npm ls srvx

Analyze the terminal output to locate any version of Srvx in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.11.13), your application is affected.

Note: The npm ls srvx command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-706: Use of Incorrectly-Resolved Name or Reference, where the product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere. In Srvx, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Summary A pathname parsing discrepancy in srvx's `FastURL` allows middleware bypass on the Node.js adapter when a raw HTTP request uses an absolute URI with a non-standard scheme (e.g. `file://`). ## Details When Node.js receives an absolute URI in the request line (e.g. `GET file://hehe?/internal/run HTTP/1.1`), `req.url` is set verbatim to `file://hehe?/internal/run`. Since this doesn't start with `/`, `NodeRequestURL` passes it directly to `FastURL` as a string, which stores it in `#href` for lazy manual parsing. `FastURL#getPos()` locates the pathname by finding `://` then scanning for the next `/` — but this fails for URLs like `file://hehe?/internal/run` where a `?` appears before the first `/` after the authority. The manual parser extracts pathname as `/internal/run`, while native `URL` correctly parses it as pathname `/` with search `?/internal/run`. This discrepancy means the router (using the fast-path) matches `/internal/run`, but if any middleware triggers a deopt to native `URL` (e.g. by accessing `hostname`), subsequent middleware sees a different pathname — bypassing route-based middleware guards. This is a bypass of [CVE-2026-33131](https://github.com/h3js/h3/security/advisories/GHSA-3vj8-jmxq-cgj5). ## Impact Route-based middleware (auth guards, rate limiters, etc.) can be bypassed on the Node.js adapter when a prior middleware triggers `FastURL` deopt. Requires sending a raw HTTP request (not possible from browsers). ## Fix srvx `FastURL` constructor now deopts to native `URL` for any string not starting with `/`, ensuring consistent pathname resolution.

CVE-2026-33732 Affected Srvx Versions

1 component(s)
Fixed Versions:
0.11.13
Product / Package Ecosystem Affected Versions Fixed Version
srvx
npm/srvx
npm
< 0.11.13
0.11.13

References

GitHub Advisory / Wiki ADVISORY
https://github.com/h3js/h3/security/advisories/GHSA-p36q-q72m-gchr
NVD — CVE-2026-33732 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33732
Security Fix Commit FIX COMMIT
https://github.com/h3js/srvx/commit/de0d69901c357f36a39b7e13eebef6c930652baa
Srvx Source Repository REPOSITORY
https://github.com/h3js/srvx
Srvx Release RELEASE
https://github.com/h3js/srvx/releases/tag/v0.11.13

Frequently Asked Questions

What is CVE-2026-33732?
CVE-2026-33732 is a security vulnerability in Srvx involving srvx is vulnerable to middleware bypass via absolute URI in request line under CWE-706: Use of Incorrectly-Resolved Name or Reference.
Which Srvx versions are affected?
Affected versions include releases prior to 0.11.13 across affected packages: srvx.
What version fixes CVE-2026-33732?
Upgrading to 0.11.13 (or the latest patched release for your respective branch) resolves the vulnerability.
Is srvx affected?
Yes, srvx is affected in releases prior to 0.11.13. Upgrade your dependency to 0.11.13 or later.
What is the CVSS score of CVE-2026-33732?
CVE-2026-33732 has a CVSS v3.1 base score of 4.8 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2026-33732?
CVE-2026-33732 is classified under CWE-706: Use of Incorrectly-Resolved Name or Reference (The product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere.).
How can I check npm dependencies for CVE-2026-33732?
Run the dependency tree command: 'npm ls srvx'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-p36q-q72m-gchr",
  "modified" : "2026-03-27T21:11:10Z",
  "published" : "2026-03-26T16:52:08Z",
  "aliases" : [ "CVE-2026-33732" ],
  "summary" : "srvx is vulnerable to middleware bypass via absolute URI in request line ",
  "details" : "## Summary\n\nA pathname parsing discrepancy in srvx's `FastURL` allows middleware bypass on the Node.js adapter when a raw HTTP request uses an absolute URI with a non-standard scheme (e.g. `file://`).\n\n## Details\n\nWhen Node.js receives an absolute URI in the request line (e.g. `GET file://hehe?/internal/run HTTP/1.1`), `req.url` is set verbatim to `file://hehe?/internal/run`. Since this doesn't start with `/`, `NodeRequestURL` passes it directly to `FastURL` as a string, which stores it in `#href` for lazy manual parsing.\n\n`FastURL#getPos()` locates the pathname by finding `://` then scanning for the next `/` — but this fails for URLs like `file://hehe?/internal/run` where a `?` appears before the first `/` after the authority. The manual parser extracts pathname as `/internal/run`, while native `URL` correctly parses it as pathname `/` with search `?/internal/run`.\n\nThis discrepancy means the router (using the fast-path) matches `/internal/run`, but if any middleware triggers a deopt to native `URL` (e.g. by accessing `hostname`), subsequent middleware sees a different pathname — bypassing route-based middleware guards.\n\nThis is a bypass of [CVE-2026-33131](https://github.com/h3js/h3/security/advisories/GHSA-3vj8-jmxq-cgj5).\n\n## Impact\n\nRoute-based middleware (auth guards, rate limiters, etc.) can be bypassed on the Node.js adapter when a prior middleware triggers `FastURL` deopt. Requires sending a raw HTTP request (not possible from browsers).\n\n## Fix\n\nsrvx `FastURL` constructor now deopts to native `URL` for any string not starting with `/`, ensuring consistent pathname resolution.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "srvx"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.11.13"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/h3js/h3/security/advisories/GHSA-p36q-q72m-gchr"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-33732"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/h3js/srvx/commit/de0d69901c357f36a39b7e13eebef6c930652baa"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/h3js/srvx"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/h3js/srvx/releases/tag/v0.11.13"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-706" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-26T16:52:08Z",
    "nvd_published_at" : "2026-03-26T18:16:31Z"
  }
}