Vulnerability Report

CVE-2026-33732

Title: Middleware bypass via pathname parsing discrepancy

Other

Proof Of Concept

No public PoC currently indexed for CVE-2026-33732.

CWE Category CWE-706

Published Date Mar 26, 2026

Modified Date Apr 02, 2026

Exploit Status Not Found

Score 4.8 CVSS v3.1

Exploit Probability (EPSS)

0.25%

Vulnerability Summary

CVE-2026-33732: srvx is a universal server based on web standards. Prior to version 0.11.13, 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://`). Starting in version 0.11.13, the `FastURL` constructor now deopts to native `URL` for any string not starting with `/`, ensuring consistent pathname resolution.

Impacted Vendors

srvx 1

h3 1

Reference Links

https://github.com/h3js/h3/security/advisories/GHSA-p36q-q72m-gchr https://github.com/h3js/srvx/commit/de0d69901c357f36a39b7e13eebef6c930652baa https://github.com/h3js/srvx/releases/tag/v0.11.13

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

4.8

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-33732 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

April 02, 2026 MODIFIED

Vulnerability data updated via NVD.

April 02, 2026 MODIFIED

Vulnerability data updated via NVD.

March 30, 2026 MODIFIED

Vulnerability data updated via NVD.

March 26, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity HIGH

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected Stack

No specific products linked.