MAL-2026-15496

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/amplitude-experiment/MAL-2026-15496.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-15496
Aliases
  • GHSA-4qr2-j5wh-f48g
Published
2026-08-28T23:11:47Z
Modified
2026-08-29T18:45:18Z
Summary
Malicious code in amplitude-experiment (npm)
Details

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

Source: amazon-inspector (110901fcd2d59ab6eed44d962da05830610e5c3cb03ca103db5a379e6c6052e4)

package.json declares a single dependency whose key equals the package's own name (amplitude-experiment) and whose source is the bare HTTPS URL https://repo.securityctrl.com/amplitude-experiment instead of a registry version range. On npm install, npm fetches whatever bytes that URL returns and installs them as the resolved dependency, with no version pin and no integrity check, running any lifecycle scripts contained in the fetched tarball. The shipped source of amplitude-experiment@55.0.0 itself is an inert stub, so the manifest line is the entire delivery mechanism. The dependency key matching the package's own name mirrors a dependency-confusion shape against the legitimate amplitude-experiment name, and the implausibly high version (55.0.0) is consistent with a resolution-winning squat.

Source: ghsa-malware (1de763ed35499a4b3ce864ee6f4120ef872a3f1dd5837fffd8ae2930e6ce6ac7)

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": [
        {
            "id": "IN-MAL-2026-019070",
            "import_time": "2026-08-28T23:14:36.050782922Z",
            "modified_time": "2026-08-28T23:11:47Z",
            "sha256": "110901fcd2d59ab6eed44d962da05830610e5c3cb03ca103db5a379e6c6052e4",
            "source": "amazon-inspector",
            "versions": [
                "55.0.0"
            ]
        },
        {
            "id": "GHSA-4qr2-j5wh-f48g",
            "import_time": "2026-08-29T18:26:29.943513988Z",
            "modified_time": "2026-08-29T18:13:37Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "1de763ed35499a4b3ce864ee6f4120ef872a3f1dd5837fffd8ae2930e6ce6ac7",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / amplitude-experiment

Package

Name
amplitude-experiment
View open source insights on deps.dev
Purl
pkg:npm/amplitude-experiment

Affected ranges

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

Affected versions

55.*
55.0.0

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "package.json",
            "sha256": "648a6cee53f0faef268def05385a92bfc558cdb95d6ba1618a513a8f3becfbaf",
            "tlsh": "38e072284a1322330aca026b4c7dc02b73164e1b200cbc0ab3eb441ca40edb77afd34e"
        }
    ],
    "package_integrity": [
        {
            "filename": "amplitude-experiment-55.0.0.tgz",
            "hashes": {
                "sha1": "1f305815e1dd21bb6131bc27ae961dddb9548ac9",
                "sha512_sri": "sha512-F0eQqX17Je1UA85SKibTo0yctgLX73MlC9XxCK4/3JXK+TdKlXpFo8OvPHt5zQBX5NajrY12d077H3wGqldM9g=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/amplitude-experiment/MAL-2026-15496.json"