MAL-2026-12776

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa-plugin-root-sentry/MAL-2026-12776.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12776
Aliases
  • GHSA-j69h-cpjh-f2j3
Published
2026-08-05T13:41:23Z
Modified
2026-08-06T01:20:37.823017818Z
Summary
Malicious code in devplatform-spa-plugin-root-sentry (npm)
Details

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

Source: amazon-inspector (4a5ac277cf4ba72cf1040b5e06d6875a7228d7ec491d93423198e2b2f92ecb6a)

Package presents as a Sentry-related SPA plugin but the exported class is an empty stub; index.js requires bootstrap.js, which on load selects a platform-specific endpoint, fetches an opaque binary from Cloudflare Workers hosts (oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev) with hostnames reconstructed at runtime via array-join to evade literal detection, writes it to /tmp or %TEMP% under disguised names (.cache<hex>, dotnetdiag<hex>.exe), chmods 0755, and spawns it detached via /bin/sh or cmd. If HTTPS mirrors fail, a DNS-TXT fallback channel queries c.<domain> at sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru for a chunk count and reassembles base64-encoded payload chunks from N.<domain> TXT records. A second file lib/telemetry.js contains an unreferenced variant of the same dropper. The Cloudflare Workers and wel1.ru destinations are unrelated to any legitimate Sentry infrastructure, and the package's advertised functionality is a cover story around the dropper.

Source: ghsa-malware (f76cb55af9e854ca5d57e6b318ae84ac06c517b98e7628117cc949f69c5c84fc)

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": [
        {
            "import_time": "2026-08-05T14:19:50.919785661Z",
            "modified_time": "2026-08-05T13:41:23Z",
            "sha256": "4a5ac277cf4ba72cf1040b5e06d6875a7228d7ec491d93423198e2b2f92ecb6a",
            "id": "IN-MAL-2026-014998",
            "versions": [
                "35.4.5"
            ],
            "source": "amazon-inspector"
        },
        {
            "import_time": "2026-08-06T00:58:53.396920533Z",
            "sha256": "f76cb55af9e854ca5d57e6b318ae84ac06c517b98e7628117cc949f69c5c84fc",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "id": "GHSA-j69h-cpjh-f2j3",
            "modified_time": "2026-08-05T18:03:38Z",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-spa-plugin-root-sentry

Package

Name
devplatform-spa-plugin-root-sentry
View open source insights on deps.dev
Purl
pkg:npm/devplatform-spa-plugin-root-sentry

Affected ranges

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

Affected versions

35.*
35.4.5

Database specific

cwes 
[
    {
        "name": "Embedded Malicious Code",
        "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."
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-Xn7+F3h+FuZJMuHrmngsFjwEzDvnlZj9Wn6wmIJ7DBIvAXKCNpX43ESiANK3tpxRLyyhkSSsUBrZADL+3br/Tg==",
                "sha1": "78243e644bcacf8cee5eaebca86022851d26666b"
            },
            "filename": "devplatform-spa-plugin-root-sentry-35.4.5.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_bootstrap.js",
            "sha256": "f5655afb196a9f582039436add05b65a737c6a1fa04f2fd3daa43440b0bc60e5",
            "tlsh": "f4a1969a166670194bb097e487275416fa5be6633380c2d4fb9ca8981f73024c3b3efc"
        },
        {
            "path": "index.js",
            "sha256": "c45a44f6258e0472a7f48f8f17e04ebf93648fb2a23a4f329f8865f0b552edc9",
            "tlsh": "b7f02d9512fae862daf063a3cba34042faa689150e47505c7a4c51db0f60d54019cfbd"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa-plugin-root-sentry/MAL-2026-12776.json"