MAL-2026-3811

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/claude-code-base-action/MAL-2026-3811.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-3811
Published
2026-05-17T15:19:44Z
Modified
2026-05-19T18:02:20.507250263Z
Summary
Malicious code in claude-code-base-action (npm)
Details

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (3000eab5b77e9247ae3dc1125384eaeb03ecdae7ecd17fe30ee6216a6a87c686)

The package claude-code-base-action was found to contain malicious code.

Source: ossf-package-analysis (f08c76c834d5f7c2ce735d4dd85684ec34f3dcc29e1353dc7633fb72ee79aaaf)

The OpenSSF Package Analysis project identified 'claude-code-base-action' @ 2.0.0 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.
Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-05-17T15:26:55.54141334Z",
            "versions": [
                "2.0.0"
            ],
            "source": "ossf-package-analysis",
            "modified_time": "2026-05-17T15:19:44Z",
            "sha256": "f08c76c834d5f7c2ce735d4dd85684ec34f3dcc29e1353dc7633fb72ee79aaaf"
        },
        {
            "import_time": "2026-05-17T15:50:45.342577666Z",
            "versions": [
                "2.2.2"
            ],
            "source": "ossf-package-analysis",
            "sha256": "3c9e36883f6e538eda86eb64854165d767b96458a12405a7ccd967c8015f6269",
            "modified_time": "2026-05-17T15:41:36Z"
        },
        {
            "import_time": "2026-05-19T17:50:33.981476006Z",
            "versions": [
                "2.0.0",
                "2.2.2"
            ],
            "source": "amazon-inspector",
            "modified_time": "2026-05-19T16:47:48Z",
            "sha256": "3000eab5b77e9247ae3dc1125384eaeb03ecdae7ecd17fe30ee6216a6a87c686"
        }
    ]
}
References
Credits

Affected packages

npm / claude-code-base-action

Package

Name
claude-code-base-action
View open source insights on deps.dev
Purl
pkg:npm/claude-code-base-action

Affected ranges

Affected versions

2.*
2.0.0
2.2.2

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/claude-code-base-action/MAL-2026-3811.json"