Most recent entries from all

bdu:2020-04073

BIT-ruby-2020-5247 — HTTP Response Splitting in Puma

Affected: Bitnami: ruby

In Puma (RubyGem) before 4.3.2 and before 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS). This is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server. This has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters.

EUVD-2026-36472

fkie_cve-2020-5247

GHSA-84j7-475p-hp8v — HTTP Response Splitting in Puma

Affected: RubyGems: puma

In Puma (RubyGem) before 4.3.2 and 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting.

While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS).

This is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server.

This has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters.

gsd-2020-5247

msrc_CVE-2020-5247 — HTTP Response Splitting in Puma

msrc_CVE-2020-5247

openSUSE-SU-2020:1993-1 — Security update for rmt-server

Security update for rmt-server

SUSE-SU-2020:2060-1 — Security update for rubygem-puma

Security update for rubygem-puma

Withdrawn: UBUNTU-CVE-2020-5247

Withdrawn by the publisher.

Affected: Ubuntu:20.04:LTS: puma