SCA: security update for nanopb (GHSA-7mv5-5mxh-qg88)

high Tenable Self-Hosted Container Security Plugin ID 433986

Description

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

- Nanopb is a small code-size Protocol Buffers implementation in ansi C. In Nanopb before versions 0.3.9.8
and 0.4.5, decoding a specifically formed message can cause invalid `free()` or `realloc()` calls if the
message type contains an `oneof` field, and the `oneof` directly contains both a pointer field and a non-
pointer field. If the message data first contains the non-pointer field and then the pointer field, the
data of the non-pointer field is incorrectly treated as if it was a pointer value. Such message data
rarely occurs in normal messages, but it is a concern when untrusted data is parsed. This has been fixed
in versions 0.3.9.8 and 0.4.5. See referenced GitHub Security Advisory for more information including
workarounds. (CVE-2021-21401)

Plugin Details

Severity: High

ID: 433986

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 8/19/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.91

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.3

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

CVSS Score Source: CVE-2021-21401

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.4

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

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

CVSS v4

Risk Factor: High

Base Score: 7.1

Threat Score: 5.7

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/30/2024

Vulnerability Publication Date: 3/23/2021

Reference Information

CVE: CVE-2021-21401

cwe: CWE-763

Detections

Analytics