Detections
Analytics

SCA: security update for Metalama.Framework, Metalama.Tool (GHSA-m6wq-39m7-9xpp)

medium Tenable Self-Hosted Container Security Plugin ID 474616

Description

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

 - Metalama is a Roslyn-based open-source patterns and architecture toolkit for C#. Prior to 2025.1.18,
 2026.0.25 and 2026.1.19, Metalama.Framework and Metalama.Tool load and execute compile-time assemblies,
 auxiliary executable tools and embedded helper assemblies from predictable temporary directories. On
 `Linux` and `macOS`, the default `Path.GetTempPath()` location is world-writable, and existing artifacts
 are trusted based on sentinel or `.completed` marker files rather than integrity verification. A local
 unprivileged user on a shared machine or CI/build agent can pre-create the deterministic directory
 structure and plant a malicious DLL with the matching sentinel. When a higher-privileged developer or
 build account subsequently builds, Metalama skips regeneration and executes the planted artifact in the
 compiler, IDE or MSBuild process as the building user. This permits cross-user privilege escalation,
 reading source and secrets, supply-chain tampering with build output, or disrupting builds. Default
 Windows per-user temporary directories are protected by ACLs and are not affected. Deployer-selected
 insecure cache locations are outside the vulnerability's scope. This issue is fixed in versions 2025.1.18,
 2026.0.25 and 2026.1.19. (CVE-2026-62847)

Solution

Update the Metalama.Framework library and its related packages to version 2025.1.18 or later.

See Also

https://github.com/advisories/GHSA-m6wq-39m7-9xpp

Plugin Details

Severity: Medium

ID: 474616

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 10/14/2026

Updated: 11/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.13

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-62847

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6

Threat Score: 1.8

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/14/2026

Vulnerability Publication Date: 10/14/2026

Reference Information

CVE: CVE-2026-62847