Skip to main content
VulnerabilityPublished

CVE-2026-33732: h3js srvx · Use of Incorrectly-Resolved Name or Reference

Affects h3js srvxSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 4.8 Medium : upgrade to 0.11.13 when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.11.13
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade srvx and h3js/srvx to 0.11.13.

Affected software

ProductAffectedFixed in
h3jssrvxAffected
  • <0.11.13
Fixed in
  • 0.11.13
GitHubh3js/srvxpkg:github/h3js/srvxOther threatsAffected
  • <0.11.13
Fixed in
  • 0.11.13

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade srvx to version 0.11.13 or later, where the FastURL constructor has been updated to use the native URL parser for non-root-relative strings, eliminating the pathname parsing discrepancy. No additional mitigation steps are indicated.

Description

A vulnerability in h3js srvx versions prior to 0.11.13 allows middleware bypass due to a pathname parsing discrepancy in the FastURL constructor. This occurs when a raw HTTP request uses an absolute URI with a non-standard scheme such as file://. The issue is resolved starting in version 0.11.13 by changing FastURL to use the native URL constructor for strings not starting with '/'. The CVSS score is 4.8, indicating medium severity.

References

Community reviews

Loading reviews…