Detections
Analytics

SCA: security update for pysaml2 (GHSA-qf7v-8hj3-4xw7)

high Tenable Cloud Security Plugin ID 422693

Description

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

 - PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature
 wrapping is effective, i.e., it is affected by XML Signature Wrapping (XSW). The signature information and
 the node/object that is signed can be in different places and thus the signature verification will
 succeed, but the wrong data will be used. This specifically affects the verification of assertion that
 have been signed. (CVE-2020-5390)

See Also

https://github.com/advisories/GHSA-qf7v-8hj3-4xw7

Plugin Details

Severity: High

ID: 422693

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 3/28/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.51

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-5390

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/6/2020

Vulnerability Publication Date: 1/13/2020

Reference Information

CVE: CVE-2020-5390

cwe: CWE-347