GHSA-9p44-j4g5-cfx5 · Severity: medium · Ecosystem: actions — Trivy Action has a script injection via sourced env file in composite action
Trivy Action runs Trivy as GitHub action to scan a Docker container image for vulnerabilities. A command injection vulnerability exists in `aquasecurity/trivy-action` versions 0.31.0 through 0.33.1 due to improper handling of action inputs when exporting environment variables. The action writes `export VAR=<input>` lines to `trivy_envs.txt` based on user-supplied inputs and subsequently sources this file in `entrypoint.sh`. Because input values are written without appropriate shell escaping, attacker-controlled input containing shell metacharacters (e.g., `$(...)`, backticks, or other command substitution syntax) may be evaluated during the sourcing process. This can result in arbitrary command execution within the GitHub Actions runner context. Version 0.34.0 contains a patch for this issue. The vulnerability is exploitable when a consuming workflow passes attacker-controlled data into any action input that is written to `trivy_envs.txt`. Access to user input is required by the malicious actor. Workflows that do not pass attacker-controlled data into `trivy-action` inputs, workflows that upgrade to a patched version that properly escapes shell values or eliminates the `source ./trivy_envs.txt` pattern, and workflows where user input is not accessible are not affected.
Conclusion & alert: CVE-2026-26189 is rated Moderate Risk (48.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.30%). Core evidence: EPSS rose +1.20% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.10% | 1.30% | +1.20% |
| 2 | 2026-02-20 | — | 0.10% | — |
Full EPSS history (2 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.9 | 3.1 | MEDIUM |
|
0.7 | 5.2 | [email protected] |
| 8.1 | 3.1 | HIGH |
|
2.2 | 5.9 | [email protected] |
GHSA-9p44-j4g5-cfx5 · Severity: medium · Ecosystem: actions — Trivy Action has a script injection via sourced env file in composite action
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| aquasec | trivy_action | >= 0.31.0, < 0.34.1 | cpe:2.3:a:aquasec:trivy_action:*:*:*:*:*:*:*:* |