MAL-2026-5391

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@0xlr/vercel-analytics/MAL-2026-5391.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-5391
Aliases
  • GHSA-p9mc-hf7g-gjfx
Published
2026-06-09T16:07:40Z
Modified
2026-08-02T23:34:37.564839131Z
Summary
Malicious code in @0xlr/vercel-analytics (npm)
Details

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

Source: amazon-inspector (fda046018b2c121cb96e157cadce6d8aee695beb7086008140da0a9c6eebc938)

On npm install, postinstall.js enumerates every process.env variable (including credentials such as AWS_*, NPMTOKEN, GITHUBTOKEN and other CI tokens) and collects host fingerprint data — hostname, username, homedir, cwd, argv, and platform — then POSTs the JSON payload to https://rytxau88zxh61dw6qz4yn19naeg54vsk.oastify.com/. The destination is a Burp Suite Collaborator (oastify.com) out-of-band interaction host, used here as an attacker-controlled exfiltration sink. The package name @0xlr/vercel-analytics impersonates Vercel's @vercel/analytics, and the 999.0.0 version plus the self-described Placeholder reservation text are the canonical shape of a weaponized dependency-confusion squat designed to override an internal package of the same unscoped name.

Source: ghsa-malware (71bfa7b0e85ac84d5beaafdd5f7c686091103f78a848c6d23041b3eaf31b51e4)

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-2026-004974",
            "source": "amazon-inspector",
            "import_time": "2026-06-09T16:59:45.415414931Z",
            "modified_time": "2026-06-09T16:07:41Z",
            "sha256": "7b1f5b447021e3782c516e27d02a751f714d885ebfd7fd9751de5921a42bac93",
            "versions": [
                "999.0.0"
            ]
        },
        {
            "id": "IN-MAL-2026-004973",
            "source": "amazon-inspector",
            "import_time": "2026-06-09T16:59:45.321423987Z",
            "modified_time": "2026-06-09T16:07:40Z",
            "sha256": "fda046018b2c121cb96e157cadce6d8aee695beb7086008140da0a9c6eebc938",
            "versions": [
                "999.0.0"
            ]
        },
        {
            "id": "GHSA-p9mc-hf7g-gjfx",
            "source": "ghsa-malware",
            "import_time": "2026-08-02T22:41:05.070204Z",
            "modified_time": "2026-07-31T15:37:14Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "71bfa7b0e85ac84d5beaafdd5f7c686091103f78a848c6d23041b3eaf31b51e4"
        }
    ]
}
References
Credits

Affected packages

npm / @0xlr/vercel-analytics

Package

Name
@0xlr/vercel-analytics
View open source insights on deps.dev
Purl
pkg:npm/%400xlr/vercel-analytics

Affected ranges

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

Affected versions

999.*
999.0.0

Database specific

indicators 
{
    "evidence_files": [
        {
            "sha256": "1ded8a789cf3732b19e4d08f9f8b224a4c81914daad56d165ca4fbce8cf21e07",
            "path": "postinstall.js",
            "tlsh": "762115e152f4867413f23b88b09e95015677f1173a0778f4bdcd52151fac62812f2579"
        },
        {
            "sha256": "26e53cb17b1667cd29775550a493147e171374adf83b5282c950f456bcb659d9",
            "path": "package.json",
            "tlsh": "f2d0225cb781ba377e850bda3c1388cc8af9032480a4c03049930ebc0262ee8c99b017"
        }
    ],
    "package_integrity": [
        {
            "filename": "vercel-analytics-999.0.0.tgz",
            "hashes": {
                "sha1": "baee0235d98f8932599d837c9dda7767d13a0455",
                "sha512_sri": "sha512-t0yoWQyfDoXL8bl8mHAX4L4KlVL8KU6smTuXJPnhnDd/iAWU7HjF19drSIeSOQf3ueZpG8wRcQ7VgQDja6i3CQ=="
            }
        }
    ],
    "domains": [
        "rytxau88zxh61dw6qz4yn19naeg54vsk.oastify.com"
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@0xlr/vercel-analytics/MAL-2026-5391.json"
cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]