Detections
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Alpine: multiple py3-urllib3 packages: security update to 1.26.4-r0

medium Tenable Cloud Security Plugin ID 424437

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases
 involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn't given
 via proxy_config) doesn't verify the hostname of the certificate. This means certificates for different
 servers that still validate properly with the default urllib3 SSLContext will be silently accepted.
 (CVE-2021-28363)

See Also

https://security.alpinelinux.org/vuln/CVE-2021-28363

Plugin Details

Severity: Medium

ID: 424437

Version: Revision 1.7

Type: Local

Published: 4/4/2025

Updated: 5/30/2025

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 6.91

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2021-28363

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 2.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 3/15/2021

Reference Information

CVE: CVE-2021-28363