CWE-506
Allowed-with-ReviewEmbedded Malicious Code
Abstraction: Class · Status: Incomplete
The product contains code that appears to be malicious in nature.
548 vulnerabilities reference this CWE, most recent first.
GHSA-P5P2-RHC3-WMF3
Vulnerability from github – Published: 2020-09-03 17:03 – Updated: 2021-10-04 15:40All versions of this package contained malware. The package was designed to find and exfiltrate cryptocurrency wallets.
Recommendation
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.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "siganle"
},
"ranges": [
{
"events": [
{
"introduced": "0.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-506"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:58:17Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "All versions of this package contained malware. The package was designed to find and exfiltrate cryptocurrency wallets.\n\n\n## Recommendation\n\nAny 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.\n\nThe 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.",
"id": "GHSA-p5p2-rhc3-wmf3",
"modified": "2021-10-04T15:40:00Z",
"published": "2020-09-03T17:03:31Z",
"references": [
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/1409"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Malicious Package in siganle"
}
GHSA-P5VF-5754-X7P3
Vulnerability from github – Published: 2026-02-13 21:02 – Updated: 2026-02-13 21:02It appeared to be typosquatting existing crate polymarket-client-sdk (sdks vs sdk) and attempting to steal credentials from local files.
The malicious crate had 1 version published on 2026-02-09 and had been downloaded only 33 times. There were no crates depending on this crate on crates.io.
Thanks to Roland Peelen for finding and reporting this to the crates.io team!
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "polymarket-client-sdks"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-506"
],
"github_reviewed": true,
"github_reviewed_at": "2026-02-13T21:02:38Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "It appeared to be typosquatting existing crate [`polymarket-client-sdk`](https://crates.io/crates/polymarket-client-sdk) (`sdks` vs `sdk`) and attempting to steal credentials from local files.\n\nThe malicious crate had 1 version published on 2026-02-09 and had been downloaded only 33 times. There were no crates depending on this crate on crates.io.\n\nThanks to Roland Peelen for finding and reporting this to the crates.io team!",
"id": "GHSA-p5vf-5754-x7p3",
"modified": "2026-02-13T21:02:38Z",
"published": "2026-02-13T21:02:38Z",
"references": [
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2026-0011.html"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "`polymarket-client-sdks` was removed from crates.io for malicious code"
}
GHSA-P62R-JF56-H429
Vulnerability from github – Published: 2020-09-03 20:29 – Updated: 2020-08-31 18:49All versions of evil-package contain malicious code. The package uploads the contents of process.env to example.com/log.
Recommendation
Remove the package from your environment. Given the host where the information was uploaded to there is no further indication of compromise.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "evil-package"
},
"ranges": [
{
"events": [
{
"introduced": "0.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-506"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:49:31Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "All versions of `evil-package` contain malicious code. The package uploads the contents of `process.env` to `example.com/log`.\n\n\n## Recommendation\n\nRemove the package from your environment. Given the host where the information was uploaded to there is no further indication of compromise.",
"id": "GHSA-p62r-jf56-h429",
"modified": "2020-08-31T18:49:31Z",
"published": "2020-09-03T20:29:58Z",
"references": [
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/1162"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "Malicious Package in evil-package"
}
GHSA-P7QP-3FH7-PV4P
Vulnerability from github – Published: 2020-09-03 22:24 – Updated: 2021-09-29 21:27Version 2.0.2 contained malicious code. The package targeted the Ethereum cryptocurrency and performed transactions to wallets not controlled by the user.
Recommendation
Remove the package from your environment. Ensure no Ethereum funds were compromised.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "buffur-xor"
},
"ranges": [
{
"events": [
{
"introduced": "0.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-506"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:52:54Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "Version 2.0.2 contained malicious code. The package targeted the Ethereum cryptocurrency and performed transactions to wallets not controlled by the user.\n\n\n## Recommendation\n\nRemove the package from your environment. Ensure no Ethereum funds were compromised.",
"id": "GHSA-p7qp-3fh7-pv4p",
"modified": "2021-09-29T21:27:36Z",
"published": "2020-09-03T22:24:04Z",
"references": [
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/1262"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Malicious Package in buffur-xor"
}
GHSA-P8FM-W787-X6X3
Vulnerability from github – Published: 2020-09-02 15:50 – Updated: 2021-10-01 13:42All versions of portionfatty12 are considered malicious. The package is malware designed to steal user's data. When installed it uploads the user's public SSH keys to a remote server.
Recommendation
This package is not available on the npm Registry anymore. If you happen to find this package in your environment you should consider the system it was installed on compromised and assess if further response (such as rotating all credentials found on the compromised machine) is necessary.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "portionfatty12"
},
"ranges": [
{
"events": [
{
"introduced": "0.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-506"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:34:55Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "All versions of `portionfatty12` are considered malicious. The package is malware designed to steal user\u0027s data. When installed it uploads the user\u0027s public SSH keys to a remote server.\n\n\n## Recommendation\n\nThis package is not available on the npm Registry anymore. If you happen to find this package in your environment you should consider the system it was installed on compromised and assess if further response (such as rotating all credentials found on the compromised machine) is necessary.\n",
"id": "GHSA-p8fm-w787-x6x3",
"modified": "2021-10-01T13:42:27Z",
"published": "2020-09-02T15:50:28Z",
"references": [
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/765"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Malicious Package in portionfatty12"
}
GHSA-P9G3-VPVP-HCJ5
Vulnerability from github – Published: 2020-09-03 21:41 – Updated: 2021-09-29 20:56Version 2.0.2 contained malicious code. The package targeted the Ethereum cryptocurrency and performed transactions to wallets not controlled by the user.
Recommendation
Remove the package from your environment. Ensure no Ethereum funds were compromised.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "bufber-xor"
},
"ranges": [
{
"events": [
{
"introduced": "0.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-506"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:51:45Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "Version 2.0.2 contained malicious code. The package targeted the Ethereum cryptocurrency and performed transactions to wallets not controlled by the user.\n\n\n## Recommendation\n\nRemove the package from your environment. Ensure no Ethereum funds were compromised.",
"id": "GHSA-p9g3-vpvp-hcj5",
"modified": "2021-09-29T20:56:22Z",
"published": "2020-09-03T21:41:55Z",
"references": [
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/1234"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Malicious Package in bufber-xor"
}
GHSA-PC7Q-C837-3WJQ
Vulnerability from github – Published: 2020-09-03 17:02 – Updated: 2021-10-04 15:56All versions of this package contained malware. The package was designed to find and exfiltrate cryptocurrency wallets.
Recommendation
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.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "wallet-address-validtaor"
},
"ranges": [
{
"events": [
{
"introduced": "0.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-506"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:58:26Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "All versions of this package contained malware. The package was designed to find and exfiltrate cryptocurrency wallets.\n\n\n## Recommendation\n\nAny 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.\n\nThe 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.",
"id": "GHSA-pc7q-c837-3wjq",
"modified": "2021-10-04T15:56:21Z",
"published": "2020-09-03T17:02:58Z",
"references": [
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/1413"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Malicious Package in wallet-address-validtaor"
}
GHSA-PJ97-J597-PPM7
Vulnerability from github – Published: 2020-09-02 21:15 – Updated: 2021-09-30 20:30All versions of rqeuest typosquatted a popular package of similar name and tracked users who had installed the incorrect package. The package uploaded information to a remote server including: name of the downloaded package, name of the intended package, the Node version and whether the process was running as sudo. There is no further compromise.
Recommendation
Remove the package from your dependencies and always ensure package names are typed correctly upon installation.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "rqeuest"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-506"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:38:52Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "All versions of `rqeuest` typosquatted a popular package of similar name and tracked users who had installed the incorrect package. The package uploaded information to a remote server including: name of the downloaded package, name of the intended package, the Node version and whether the process was running as sudo. There is no further compromise.\n\n\n## Recommendation\n\nRemove the package from your dependencies and always ensure package names are typed correctly upon installation.",
"id": "GHSA-pj97-j597-ppm7",
"modified": "2021-09-30T20:30:01Z",
"published": "2020-09-02T21:15:22Z",
"references": [
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/870"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Malicious Package in rqeuest"
}
GHSA-PJWM-RVH2-C87W
Vulnerability from github – Published: 2021-10-22 20:38 – Updated: 2026-02-17 21:57The npm package ua-parser-js had three versions published with malicious code. Users of affected versions (0.7.29, 0.8.0, 1.0.0) should upgrade as soon as possible and check their systems for suspicious activity. See this issue for details as they unfold.
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.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "ua-parser-js"
},
"ranges": [
{
"events": [
{
"introduced": "0.7.29"
},
{
"fixed": "0.7.30"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.7.29"
]
},
{
"package": {
"ecosystem": "npm",
"name": "ua-parser-js"
},
"ranges": [
{
"events": [
{
"introduced": "0.8.0"
},
{
"fixed": "0.8.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.8.0"
]
},
{
"package": {
"ecosystem": "npm",
"name": "ua-parser-js"
},
"ranges": [
{
"events": [
{
"introduced": "1.0.0"
},
{
"fixed": "1.0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.0.0"
]
}
],
"aliases": [
"CVE-2021-4229"
],
"database_specific": {
"cwe_ids": [
"CWE-506",
"CWE-912"
],
"github_reviewed": true,
"github_reviewed_at": "2021-10-22T20:37:42Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "The npm package `ua-parser-js` had three versions published with malicious code. Users of affected versions (0.7.29, 0.8.0, 1.0.0) should upgrade as soon as possible and check their systems for suspicious activity. See [this issue](https://github.com/faisalman/ua-parser-js/issues/536) for details as they unfold.\n\nAny 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.",
"id": "GHSA-pjwm-rvh2-c87w",
"modified": "2026-02-17T21:57:43Z",
"published": "2021-10-22T20:38:14Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/faisalman/ua-parser-js/issues/536"
},
{
"type": "WEB",
"url": "https://github.com/faisalman/ua-parser-js/issues/536#issuecomment-949772496"
},
{
"type": "PACKAGE",
"url": "https://github.com/faisalman/ua-parser-js"
},
{
"type": "WEB",
"url": "https://www.npmjs.com/package/ua-parser-js"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Embedded malware in ua-parser-js"
}
GHSA-PM9V-325F-5G74
Vulnerability from github – Published: 2020-09-02 21:30 – Updated: 2021-09-30 21:26All versions of saync typosquatted a popular package of similar name and tracked users who had installed the incorrect package. The package uploaded information to a remote server including: name of the downloaded package, name of the intended package, the Node version and whether the process was running as sudo. There is no further compromise.
Recommendation
Remove the package from your dependencies and always ensure package names are typed correctly upon installation.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "saync"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-506"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:39:43Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "All versions of `saync ` typosquatted a popular package of similar name and tracked users who had installed the incorrect package. The package uploaded information to a remote server including: name of the downloaded package, name of the intended package, the Node version and whether the process was running as sudo. There is no further compromise.\n\n\n## Recommendation\n\nRemove the package from your dependencies and always ensure package names are typed correctly upon installation.",
"id": "GHSA-pm9v-325f-5g74",
"modified": "2021-09-30T21:26:49Z",
"published": "2020-09-02T21:30:11Z",
"references": [
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/896"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Malicious Package in saync"
}
Mitigation
Remove the malicious code and start an effort to ensure that no more malicious code exists. This may require a detailed review of all code, as it is possible to hide a serious attack in only one or two lines of code. These lines may be located almost anywhere in an application and may have been intentionally obfuscated by the attacker.
CAPEC-442: Infected Software
An adversary adds malicious logic, often in the form of a computer virus, to otherwise benign software. This logic is often hidden from the user of the software and works behind the scenes to achieve negative impacts. Many times, the malicious logic is inserted into empty space between legitimate code, and is then called when the software is executed. This pattern of attack focuses on software already fielded and used in operation as opposed to software that is still under development and part of the supply chain.
CAPEC-448: Embed Virus into DLL
An adversary tampers with a DLL and embeds a computer virus into gaps between legitimate machine instructions. These gaps may be the result of compiler optimizations that pad memory blocks for performance gains. The embedded virus then attempts to infect any machine which interfaces with the product, and possibly steal private data or eavesdrop.
CAPEC-636: Hiding Malicious Data or Code within Files
Files on various operating systems can have a complex format which allows for the storage of other data, in addition to its contents. Often this is metadata about the file, such as a cached thumbnail for an image file. Unless utilities are invoked in a particular way, this data is not visible during the normal use of the file. It is possible for an attacker to store malicious data or code using these facilities, which would be difficult to discover.