CVE-2020-26137

Aliases:GHSA-wqvq-5m8c-6g24PYSEC-2020-148ALPINE-CVE-2020-26137DEBIAN-CVE-2020-26137CGA-4rfc-c3hw-pjwwCGA-5hj8-cc7c-2xfg
Advisory lineage Upstream: 0 Downstream: 25
Modified
Published: 29 Sept 2020, 00:00
Last modified:04 Aug 2024, 15:49

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.1 (nvd)
EPSS Score
2.27% LOW
2% probability +2.03%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

29 Sept 2020, 00:00
Published
Vulnerability first disclosed
04 Aug 2024, 15:49
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v4.0•MEDIUM•Score: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  • v2.0•MEDIUM•Score: 6.4AV:N/AC:L/Au:N/C:P/I:P/A:N

EPSS Trends

Current EPSS score: 2.27%• Percentile: 82%

Techniques & Countermeasures

  • CWE-74•Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

    The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Affected Systems

  • alpine•py3-urllib3

    < 1.25.9-r0 | < 1.25.9-r0 | < 1.25.9-r0 | < 1.25.9-r0 | < 1.25.9-r0 | < 1.25.9-r0 | < 1.25.9-r0 | < 1.25.9-r0 | < 1.25.9-r0 | < 1.25.9-r0 | < 1.25.9-r0 | < 1.25.9-r0

  • chainguard•py3.13-scanner-test-scanner-test-python-vulnerability-unfixed

    all

  • canonical•ubuntu_linux

    16.04 | 18.04 | 20.04

  • debian•python-urllib3

    < 1.25.9-1 | < 1.25.9-1 | < 1.25.9-1 | < 1.25.9-1

  • debian•debian_linux

    9.0

  • oracle•communications_cloud_native_core_network_function_cloud_native_environment

    22.2.0

  • oracle•zfs_storage_appliance_kit

    8.8

  • PyPI•urllib3

    < 1dd69c5c5982fae7c87a620d487c2ebf7a6b436b | < 1.25.9

  • python•urllib3

    < 1.25.9

References (15)