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CVE-2020-11076

nvd nist
Published: May 22, 2020Modified: Jun 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Exploitability: 3.9 / Impact: 3.6
Source: NVD

Description

In Puma (RubyGem) before 4.3.4 and 3.12.5, an attacker could smuggle an HTTP response, by using an invalid transfer-encoding header. The problem has been fixed in Puma 3.12.5 and Puma 4.3.4.

Affected (4)

Puma
1 product
Puma
Fedoraproject
1 product
Fedora
Debian
1 product
Debian Linux
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Puma
Puma
From 3.0.0 to 3.12.6
Puma
From 4.0.0 to 4.3.5
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Fedora
Version 33
Configuration C
1 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 9.0

Related CWEs

CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

References (14)

Source: security-advisories@github.com
Mailing ListThird Party Advisory
Source: security-advisories@github.com
Mailing ListThird Party Advisory
Source: security-advisories@github.com
Release Notes
Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
Third Party Advisory
Source: security-advisories@github.com
Mailing ListThird Party Advisory
Source: security-advisories@github.com
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.