sync-external
This report shows the evidence for sync-external@1.6.2. 3 of 3 known versions are blocked or flagged. See all versions.
OpenSSF/OSV Malicious Advisory
imported 4mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-6336 confirms this npm version as malicious.
Advisory
MAL-2026-6336
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in sync-external (npm)
Details
The package ships an obfuscated JavaScript file at shim/index.js using hex-style identifier mangling (_0x391f3f, _0x3eff0a, _0x534564, etc.) characteristic of javascript-obfuscator output. Obfuscation alone is not proof of malicious intent — some publishers obfuscate for anti-tampering or anti-piracy reasons — but it prevents reliable assessment of the file's runtime behavior, and contextual tracing of the obfuscated code path was not available. No concrete evidence of credential exfiltration, install-time fetch-and-execute, silent-relay of caller data, or hardcoded attacker C2 was observed, but the inability to verify what the obfuscated shim does at load/use time leaves the residual risk unresolved. Recommend human review of the de-obfuscated content before trusting this package in a build pipeline.
## Source: ghsa-malware (9eba02cd977686ab88190a2b6adbf6cac674273f223ff2b2da59d6fe94fe3da6) 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.
Source & flagged code
0 flagged · loading sourceNo flagged code excerpts are attached to this scan.
Findings
1 High
HighOsv Malicious Advisory
Affected versions and remediation
This report applies to sync-external@1.6.2.
The same advisory and Firewall decision cover 3 recorded versions
1.6.0, 1.6.1, 1.6.2
The versions list below shows the verdict for each recorded version.
- Avoid installing sync-external@1.6.2. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.
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