CVE-2026-47690: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') in meltano hub
A command injection vulnerability (CWE-77) in MeltanoHub prior to commit 923820de8f64d753951fbbd54f7282a3d5f75173 allowed exfiltration of the GITHUB_TOKEN with write permissions via a vulnerable GitHub Actions workflow using pull_request_target. This workflow runs with base repository context and access to secrets. The issue is fixed in the specified commit. No known workarounds are available.
AI Analysis
Technical Summary
MeltanoHub's source code for hub.meltano.com contained a command injection vulnerability related to improper neutralization of special elements (CWE-77). The vulnerable GitHub Actions workflow used pull_request_target, which executes in the base repository context and has access to secrets such as GITHUB_TOKEN. This allowed an attacker to exfiltrate the GITHUB_TOKEN with write permissions to the repository. The vulnerability was fixed in commit 923820de8f64d753951fbbd54f7282a3d5f75173. No alternative mitigations or workarounds are documented.
Potential Impact
An attacker exploiting this vulnerability could exfiltrate the GITHUB_TOKEN with write permissions, potentially allowing unauthorized code changes or repository manipulation. The CVSS 3.1 score is 7.5 (High), reflecting network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, no confidentiality impact but high integrity impact, and no availability impact.
Mitigation Recommendations
The vulnerability is fixed in commit 923820de8f64d753951fbbd54f7282a3d5f75173. Users should update their MeltanoHub source code to include this commit or later. No known workarounds exist. Patch status is not explicitly confirmed beyond the commit fix; verify with the vendor or repository for official patch releases.
CVE-2026-47690: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') in meltano hub
Description
A command injection vulnerability (CWE-77) in MeltanoHub prior to commit 923820de8f64d753951fbbd54f7282a3d5f75173 allowed exfiltration of the GITHUB_TOKEN with write permissions via a vulnerable GitHub Actions workflow using pull_request_target. This workflow runs with base repository context and access to secrets. The issue is fixed in the specified commit. No known workarounds are available.
CVSS v3.1
Score 7.5high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
MeltanoHub's source code for hub.meltano.com contained a command injection vulnerability related to improper neutralization of special elements (CWE-77). The vulnerable GitHub Actions workflow used pull_request_target, which executes in the base repository context and has access to secrets such as GITHUB_TOKEN. This allowed an attacker to exfiltrate the GITHUB_TOKEN with write permissions to the repository. The vulnerability was fixed in commit 923820de8f64d753951fbbd54f7282a3d5f75173. No alternative mitigations or workarounds are documented.
Potential Impact
An attacker exploiting this vulnerability could exfiltrate the GITHUB_TOKEN with write permissions, potentially allowing unauthorized code changes or repository manipulation. The CVSS 3.1 score is 7.5 (High), reflecting network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, no confidentiality impact but high integrity impact, and no availability impact.
Mitigation Recommendations
The vulnerability is fixed in commit 923820de8f64d753951fbbd54f7282a3d5f75173. Users should update their MeltanoHub source code to include this commit or later. No known workarounds exist. Patch status is not explicitly confirmed beyond the commit fix; verify with the vendor or repository for official patch releases.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-19T21:18:20.403Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5fdfa79c2644c7f8c1b056
Added to database: 07/21/2026, 21:07:51 UTC
Last enriched: 07/30/2026, 07:53:01 UTC
Last updated: 09/03/2026, 10:52:09 UTC
Views: 58
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