SCA: security update for kas (GHSA-4vqc-wpwg-vh7j)

low Tenable Cloud Security Plugin ID 442623

Description

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

- kas is a setup tool for bitbake based projects. Starting in version 4.8 and prior to version 5.3, kas
checks out and processes repositories regarding configuration includes prior to validating signatures of
those repositories. This may allow to replace on original repository with one under the control of an
attacker under very specific conditions. First of all, the attacker must have gained control of a
repository that a kas file of the victim is referencing. Furthermore, the following conditions must be
fulfilled: the victim's kas configuration must include a configuration file from the attacked repository;
the repository state is referenced by tag, and no commit ID is specified (this is triggering a warning,
though); the key used for validating the tag or commit signature is stored as file in a repository; no
fingerprint for the key is specified; and the `_source_dir` key must not be set by the victim when calling
kas (e.g. by avoiding a local `.config.yaml`). Given these conditions, the attacker could modify the
included kas configuration in way that the key used to validate the tag signature of the attacker's
repository could be replaced by an attacker-chosen key. No other exploit possibilities have been
identified so far, but this does not rule out that those may exist. All patches have been released along
with kas version 5.3. As a workaround, pin the expected signature key via its fingerprint, also when
storing it as file in a repository. (CVE-2026-47192)

Solution

Update the kas library and its related packages to version 5.3 or later.

Plugin Details

Severity: Low

ID: 442623

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 6/4/2026

Updated: 8/18/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2026-47192

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: Low

Base Score: 2.1

Threat Score: 0.5

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/4/2026

Vulnerability Publication Date: 6/4/2026

Reference Information

CVE: CVE-2026-47192

cwe: CWE-347

Detections

Analytics