CVE-2020-11076

puma: In Puma (RubyGem) before 4.3.4 and 3.12.5, an attacker could smuggle an HTTP response, by using an invalid transfer-e...

CVE-2020-11076 is fixed in puma on 1 platform by puma 3.12.4-1ubuntu2+esm1 (version 3.12.4-1ubuntu2+esm1), released January 8, 2024. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0409
90th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
puma · Ubuntu 20.04 LTS (focal) 3.12.4-1ubuntu2+esm1 puma 3.12.4-1ubuntu2+esm1 Jan 8, 2024

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