MAL-2026-2895

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Import Source

https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/chai-as-optimized/MAL-2026-2895.json

JSON Data

https://api.osv.dev/v1/vulns/MAL-2026-2895

Aliases

GHSA-g99c-rjxw-f6jg

Published

2026-04-16T20:36:13Z

Modified

2026-04-23T21:14:11.469392Z

Summary

Malicious code in chai-as-optimized (npm)

Details

chai-as-optimized is a malicious npm package that when imported downloads a C2 dropper from https://api.npoint[.]io/0ac7efbc0b6b1a53b305 and executes it (similar to malware in to chai-await-test).

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

Source: amazon-inspector (9aae79ba651c775fb9210d21e89a5fe445914455de8d8ac349099a9eb0e305f5)

The package chai-as-optimized was found to contain malicious code.

Source: ghsa-malware (838c65b4d08471333988eaebfdc666b60a9d9202e80c8190ed84c9a2ba5e620a)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific

{
    "malicious-packages-origins": [
        {
            "source": "ghsa-malware",
            "modified_time": "2026-04-23T12:15:02Z",
            "id": "GHSA-g99c-rjxw-f6jg",
            "import_time": "2026-04-23T12:38:49.306357579Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "sha256": "838c65b4d08471333988eaebfdc666b60a9d9202e80c8190ed84c9a2ba5e620a"
        },
        {
            "source": "amazon-inspector",
            "modified_time": "2026-04-23T20:43:56Z",
            "import_time": "2026-04-23T20:48:57.964839084Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "sha256": "9aae79ba651c775fb9210d21e89a5fe445914455de8d8ac349099a9eb0e305f5"
        }
    ],
    "iocs": {
        "urls": [
            "https://api.npoint.io/0ac7efbc0b6b1a53b305"
        ]
    }
}

References

Credits

- Amazon Inspector - FINDER
- - actran@amazon.com
- indece - FINDER
- - https://indece.com

Affected packages

npm / chai-as-optimized

Package

Name: chai-as-optimized; View open source insights on deps.dev
Purl: pkg:npm/chai-as-optimized

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Database specific

source

"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/chai-as-optimized/MAL-2026-2895.json"

cwes

[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]