Detections
Analytics

SCA: security update for cbor2 (GHSA-wcj4-jw5j-44wh)

medium Tenable Self-Hosted Container Security Plugin ID 436533

Description

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

 - cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) serialization
 format. Starting in version 3.0.0 and prior to version 5.8.0, whhen a CBORDecoder instance is reused
 across multiple decode operations, values marked with the shareable tag (28) persist in memory and can be
 accessed by subsequent CBOR messages using the sharedref tag (29). This allows an attacker-controlled
 message to read data from previously decoded messages if the decoder is reused across trust boundaries.
 Version 5.8.0 patches the issue. (CVE-2025-68131)

See Also

https://github.com/advisories/GHSA-wcj4-jw5j-44wh

Plugin Details

Severity: Medium

ID: 436533

Version: Revision 1.10

Type: Local

Family: SCA Checks

Published: 1/1/2026

Updated: 7/6/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2025-68131

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 5.5

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/31/2025

Vulnerability Publication Date: 12/31/2025

Reference Information

CVE: CVE-2025-68131

cwe: CWE-212