What’s Vulnerable › Vulnerabilities

CVE-2020-7658

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-05-22 · updated 2026-06-17
• Weakness: CWE-444

Description

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.

Affected products

• meinheld: before 1.0.2 — fixed in 1.0.2

How to fix

Upgrade to a fixed version: meinheld 1.0.2. Check the vendor advisory for mitigations.

References

• https://github.com/mopemope/meinheld/blob/master/CHANGES.rst%2C
• https://snyk.io/vuln/SNYK-PYTHON-MEINHELD-569140
• https://github.com/mopemope/meinheld/blob/master/CHANGES.rst%2C
• https://snyk.io/vuln/SNYK-PYTHON-MEINHELD-569140

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