CVE-2020-26137

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CVSS 3.1

6.5 medium

EPSS

2%p82

Published

Sep 30, 2020 (Sep 30, 2020)

Modified

Jun 17, 2026

Description

urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.

Vendors: python canonical debian oracle
Products: urllib3, ubuntu linux, debian linux, communications cloud native core network function cloud native environment, zfs storage appliance kit
Weakness: CWE-74
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (2.3%)

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