CVE-2026-33732 (GCVE-0-2026-33732)
Vulnerability from cvelistv5 – Published: 2026-03-26 17:21 – Updated: 2026-03-27 14:41
VLAI
EPSS
VEX
Title
srvx is vulnerable to middleware bypass via absolute URI in request line
Summary
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.
Severity
4.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-27 14:41 UTC
CWE
- CWE-706 - Use of Incorrectly-Resolved Name or Reference
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/h3js/h3/security/advisories/GH… | x_refsource_CONFIRM |
| https://github.com/h3js/srvx/commit/de0d69901c357… | x_refsource_MISC |
| https://github.com/h3js/srvx/releases/tag/v0.11.13 | x_refsource_MISC |
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Nomenclature
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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