MAL-2026-11023

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bs58-88/MAL-2026-11023.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-11023
Aliases
  • GHSA-qj7h-vp7h-8v85
Published
2026-07-23T01:01:28Z
Modified
2026-08-05T06:36:03Z
Summary
Malicious code in bs58-88 (npm)
Details

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

Source: amazon-inspector (b6d1dec3ae934b73d28ddd4c002cf93f9a9be597731434f5cfead7fdbb11954f)

Package bs58-88 mimics the popular bs58 base58 encoder: README, keywords, and repository URL match the real bs58, and index.cjs re-exports functionality via require("base65-85x"). The sole runtime dependency base65-85x is itself a name that resembles the legitimate base-x package. The package under review does not contain traced installer-harm behavior (no exfiltration, no install-time fetch-and-execute, no credential access, no lifecycle scripts observed), so the concern is name-confusion plus a look-alike transitive rather than a demonstrated payload in this artifact. Whether base65-85x is itself malicious was not established here; a human reviewer should assess both the name-similarity judgment against bs58/base-x and the trust of the base65-85x dependency before publishing a public advisory.

Source: ghsa-malware (2e251130fcb84c2b20ede3b09d95f501bd3b593c051cf0f95d6beba9b11949a2)

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": "GHSA-qj7h-vp7h-8v85",
            "import_time": "2026-07-23T07:45:08.810648974Z",
            "modified_time": "2026-07-23T01:01:33Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "2e251130fcb84c2b20ede3b09d95f501bd3b593c051cf0f95d6beba9b11949a2",
            "source": "ghsa-malware"
        },
        {
            "id": "IN-MAL-2026-012928",
            "import_time": "2026-08-05T06:00:20.838803991Z",
            "modified_time": "2026-08-05T05:09:22Z",
            "sha256": "b6d1dec3ae934b73d28ddd4c002cf93f9a9be597731434f5cfead7fdbb11954f",
            "source": "amazon-inspector",
            "versions": [
                "6.0.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bs58-88

Package

Name
bs58-88
View open source insights on deps.dev
Purl
pkg:npm/bs58-88

Affected ranges

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

Affected versions

6.*
6.0.1

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": "9d2009b428b91cb33e2ddaed239467e9251974c47a790f1137370abd4e5d9b3c",
            "tlsh": "8e31db55d8b84d6307c4a1a4987a5a13e6310d8b8818fc5e73ee422c8f8c17f01fd2ed"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bs58-88/MAL-2026-11023.json"