Detections
Analytics

SCA: security update for pyasn1 (GHSA-63vm-454h-vhhq)

high Tenable Cloud Security Plugin ID 436816

Description

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

 - pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found
 that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This
 vulnerability is fixed in 0.6.2. (CVE-2026-23490)

See Also

https://github.com/advisories/GHSA-63vm-454h-vhhq

Plugin Details

Severity: High

ID: 436816

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 1/17/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.27

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-23490

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:N/A:H

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 1/16/2026

Vulnerability Publication Date: 1/16/2026

Reference Information

CVE: CVE-2026-23490