meinheld prior to 1.0.2 is vulnerable to HTTP Request Smuggling.
Priority LOW 28CWE-444Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
meinheld prior to 1.0.2 is vulnerable to HTTP Request Smuggling. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing.
Why it matters now
EPSS 0.00686 52nd percentileScored 2026-11-07
Fix Fixed meinheld: 1.0.2meinheld (PyPI): 1.0.2
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | meinheld | before 1.0.2 | 1.0.2 | Patch available | CNA |
| — | meinheld (PyPI) | before 1.0.2 | 1.0.2 | Patch available | GHSA-63h2-9cc8-fc7m |
- meinheld Vendor— Affected before 1.0.2 Fixed in 1.0.2 Patch available CNA
- meinheld (PyPI) Vendor— Affected before 1.0.2 Fixed in 1.0.2 Patch available GHSA-63h2-9cc8-fc7m
Remediation
- Fix · CNA meinheld Fixed in 1.0.2
- Fix · GHSA-63h2-9cc8-fc7m meinheld (PyPI) Fixed in 1.0.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2020-7658
- 2026-10-03 Alias added: GHSA-63h2-9cc8-fc7m
References
Other 8
- https://github.com/mopemope/meinheld/blob/master/CHANGES.rst%2C
- https://github.com/mopemope/meinheld/issues/111
- https://github.com/mopemope/meinheld/commit/0cfa70b2cd3800f1e4beeaef5421b156d90f0e09
- https://github.com/mopemope/meinheld/commit/3bc3e7ccd534277af955c0c92981d0aa033929a7
- https://github.com/mopemope/meinheld/commit/4155876bfd3e8fc4adad4aaa59ec3f1cefa1d2d1
- https://github.com/mopemope/meinheld
- https://github.com/mopemope/meinheld/blob/master/CHANGES.rst
- https://github.com/pypa/advisory-database/tree/main/vulns/meinheld/PYSEC-2020-239.yaml
Sources
- CVE-2020-7658 · CVE Program
- CVE-2020-7658 · NVD
- FIRST EPSS
- GHSA-63h2-9cc8-fc7m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences