Detections
Analytics

SCA: security update for pyyaml (GHSA-6757-jp84-gxfx)

critical Tenable Cloud Security Plugin ID 411265

Description

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

 - A vulnerability was discovered in the PyYAML library in versions before 5.3.1, where it is susceptible to
 arbitrary code execution when it processes untrusted YAML files through the full_load method or with the
 FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this
 flaw. An attacker could use this flaw to execute arbitrary code on the system by abusing the
 python/object/new constructor. (CVE-2020-1747)

See Also

https://github.com/advisories/GHSA-6757-jp84-gxfx

Plugin Details

Severity: Critical

ID: 411265

Version: Revision 1.12

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.95

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2020-1747

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.1

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/20/2021

Vulnerability Publication Date: 3/19/2020

Reference Information

CVE: CVE-2020-1747

IAVA: 2021-A-0463

cwe: CWE-20