Critical

Command Injection in dbt-labs GitHub Actions open-issue-in-repo workflow

IdentifiersCVE-2026-39382CWE-78· Improper Neutralization of Special…

CVE-2026-39382 is a command injection vulnerability in the reusable GitHub Actions workflow dbt-labs/actions/.github/workflows/open-issue-in-repo.yml. In the prep job, the workflow uses peter-evans/find-comment to locate an existing comment indicating that a docs issue has already been opened. The resulting steps.issue_comment.outputs.comment-body value is attacker-controlled and is interpolated directly into a Bash if statement without proper escaping or neutralization. A malicious comment body can break out of the intended quoted string context and inject arbitrary shell commands for execution within the workflow runner environment.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows arbitrary shell command execution in the context of the affected GitHub Actions job. This can compromise the confidentiality, integrity, and availability of the runner environment and any data or secrets accessible to that job. Depending on workflow permissions and runner configuration, an attacker may be able to manipulate workflow execution, access repository or CI/CD data exposed to the job, alter artifacts or automation outcomes, or disrupt pipeline operation.

Mitigation

If you can’t patch tonight, do this now.

Until the fix is deployed, avoid using the vulnerable reusable workflow open-issue-in-repo.yml in untrusted contexts where attacker-controlled comment content can reach the prep job. Do not interpolate untrusted workflow outputs into shell commands or conditionals without strict escaping or safer handling. Where possible, restrict workflow triggers, reduce token and secret exposure to the job, and limit permissions available to the workflow runner.

Remediation

Patch, then assume compromise.

Update to the fixed version of the affected workflow logic containing commit bbed8d28354e9c644c5a7df13946a3a0451f9ab9. Replace vulnerable workflow definitions with the patched implementation so that attacker-controlled comment content is no longer interpolated into shell syntax unsafely.

PUBLIC EXPLOITS

Exploits

No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.

VALID 0 / 1 TOTALView more in app

All candidate exploits were filtered out by Mallory's validation.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app

cvefeed high severityNews

Apr 7, 2026

CVE-2026-39382 - dbt has a Command Injection in Reusable Workflow via Unsanitized comment-body Output

A command injection vulnerability in dbt-labs/actions reusable workflow open-issue-in-repo.yml, where attacker-controlled comment-body content is inserted into a bash if statement without escaping, allowing arbitrary shell command execution.

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity1