SCA: security update for github.com/runatlantis/atlantis (GHSA-rjh2-4xgw-p2hj)

high Tenable Self-Hosted Container Security Plugin ID 477700

Description

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

- Atlantis is a self-hosted golang application that listens for Terraform pull request events via webhooks.
From version 0.4.0 until 0.47.1, Atlantis passes the pull-request-controlled workspace value from
atlantis.yaml into Terraform command arguments that are joined with strings.Join(args, " ") and executed
through sh -c. An authenticated contributor whose pull request is eligible for an Atlantis plan can
include shell metacharacters in the workspace name, causing arbitrary commands to execute as the Atlantis
service account without custom workflows, apply permission, or a malicious Terraform provider. External
contributors can reach the flaw through fork pull requests only when --allow-fork-prs is enabled, while
eligible same-repository branches do not require that option. The commands inherit the Atlantis process
environment and can access cloud-provider, Terraform, and version-control credentials as well as files,
state, and network resources available to the service. This issue is fixed in version 0.47.1.
(CVE-2026-116676)

Solution

Update the github.com/runatlantis/atlantis library and its related packages to version 0.47.1 or later.

See Also

https://github.com/advisories/GHSA-rjh2-4xgw-p2hj

Plugin Details

Severity: High

ID: 477700

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/28/2026

Updated: 10/28/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.57

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-116676

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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: 10/27/2026

Vulnerability Publication Date: 10/27/2026

Reference Information

CVE: CVE-2026-116676

cwe: CWE-78