CVE-2026-59960

HIGH 7.5

Argos JavaScript: CI Branch Name OS Command Injection in @argos-ci/core

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

Argos JavaScript provides official Argos SDKs for JavaScript. Prior to Argos core package version 6.2.1, attacker-controlled CI branch or ref values from GITHUB_HEAD_REF or ARGOS_BRANCH can flow through config.branch and getMergeBaseCommitSha() when hasRemoteContentAccess is false. The gitFetch() and gitMergeBase() functions in packages/core/src/ci-environment/git.ts interpolate these values into execSync() command strings executed by /bin/sh -c, so shell metacharacters in a pull-request branch name can execute arbitrary commands with the Argos upload process privileges on the CI runner. Successful exploitation can expose CI secrets, alter build artifacts, or compromise the runner. This issue is fixed in Argos core package version 6.2.1.

CWE	CWE-78
Vendor	argos-ci
Product	argos-javascript
Published	Sep 14, 2026
Last Updated	Sep 14, 2026

Stay Ahead of the Next One

Get instant alerts for argos-ci argos-javascript

Be the first to know when new high vulnerabilities affecting argos-ci argos-javascript are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

argos-ci / argos-javascript

< 6.2.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/argos-ci/argos-javascript/security/advisories/GHSA-4x45-gxvp-6283 github.com: https://github.com/argos-ci/argos-javascript/pull/319 github.com: https://github.com/argos-ci/argos-javascript/commit/8355f3af3be3f4fe361d58a688d21535cf672717 github.com: https://github.com/argos-ci/argos-javascript/releases/tag/@argos-ci/[email protected]