Detections
Analytics

SCA: security update for gov.nsa.emissary:emissary (GHSA-3g6g-gq4r-xjm9)

critical Tenable Cloud Security Plugin ID 439990

Description

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

 - Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, GitHub Actions workflow files
 contained shell injection points where user-controlled workflow_dispatch inputs were interpolated directly
 into shell commands via ${{ }} expression syntax. An attacker with repository write access could inject
 arbitrary shell commands, leading to repository poisoning and supply chain compromise affecting all
 downstream users. This vulnerability is fixed in 8.39.0. (CVE-2026-35580)

Solution

Update the gov.nsa.emissary:emissary library and its related packages to version 8.39.0 or later.

See Also

https://github.com/advisories/GHSA-3g6g-gq4r-xjm9

Plugin Details

Severity: Critical

ID: 439990

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 4/8/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.32

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 6.5

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

CVSS Score Source: CVE-2026-35580

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/8/2026

Vulnerability Publication Date: 4/7/2026

Reference Information

CVE: CVE-2026-35580

cwe: CWE-77