MAL-2026-611

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/mbo-letters-cl/MAL-2026-611.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-611
Published
2026-01-30T23:13:08Z
Modified
2026-02-02T06:09:32.438634Z
Summary
Malicious code in mbo-letters-cl (npm)
Details

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

Source: amazon-inspector (d367723532d1a3f90f88a1d23230230dafb47b5f26a68af29aafda36084f5417)

The package mbo-letters-cl was found to contain malicious code.

Source: ossf-package-analysis (5f9cd1b0fbc8ed1c3c4975adcaea6990c6ac35de212e800a257b2a5a6164f281)

The OpenSSF Package Analysis project identified 'mbo-letters-cl' @ 1.9.992 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.

  • The package executes one or more commands associated with malicious behavior.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-01-30T23:18:29Z",
            "import_time": "2026-01-30T23:41:13.330143905Z",
            "source": "ossf-package-analysis",
            "sha256": "5f9cd1b0fbc8ed1c3c4975adcaea6990c6ac35de212e800a257b2a5a6164f281",
            "versions": [
                "1.9.992"
            ]
        },
        {
            "modified_time": "2026-01-30T23:13:08Z",
            "import_time": "2026-01-30T23:41:13.199620827Z",
            "source": "ossf-package-analysis",
            "sha256": "7a038797c4387911dbfd31bb002720eaaf80b56da2385373ce047ce681f3d574",
            "versions": [
                "1.9.99"
            ]
        },
        {
            "modified_time": "2026-02-02T05:19:43Z",
            "import_time": "2026-02-02T05:54:45.279068031Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "sha256": "d367723532d1a3f90f88a1d23230230dafb47b5f26a68af29aafda36084f5417",
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / mbo-letters-cl

Package

Name
mbo-letters-cl
View open source insights on deps.dev
Purl
pkg:npm/mbo-letters-cl

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.9.99
1.9.992

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/mbo-letters-cl/MAL-2026-611.json"