CVE-2020-11076CWE-444

HTTP Smuggling via Transfer-Encoding Header in Puma

High · published May 22, 2020

CVSS v3.1
7.5
EPSS
4%
Percentile
90.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.04088 · 90.7th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2020-05-22T14:50Z
EPSS history
Timeline
  • 22 MAY 14:50Z
    HTTP Smuggling via Transfer-Encoding Header in Puma
    cvelistv5