@iobandamwer/cache-helper@1.1.1
OpenSSF/OSV Malicious Advisory
imported 9d ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-18329 confirms this npm version as malicious.
Advisory
MAL-2026-18329
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @iobandamwer/cache-helper (npm)
Details
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.
References
Independent LPM AI assessment
SuspiciousIndependent AI assessment: suspicious. LPM AI assessed this version as suspicious; the assessments disagree.
The manifest and entrypoint both invoke opaque native code automatically, and the Linux artifact remains uninspected. The available Windows analysis shows potentially sensitive capabilities but does not prove malicious behavior, so this warrants a warning rather than a block.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Package installation or importing index.js.
Impact
Unknown native actions could occur during installation or import; no specific harmful effect or network destination was verified.
Mechanism
Both paths call init on the platform-specific native addon; the Linux binary is unclassified, and the Windows initializer’s behavior is not established by the bounded analysis.
AI rationale
The manifest and entrypoint both invoke opaque native code automatically, and the Linux artifact remains uninspected. The available Windows analysis shows potentially sensitive capabilities but does not prove malicious behavior, so this warrants a warning rather than a block.
Evidence
package.jsonindex.js.lpm-inspection-7O88TF/0-e62a0ab569c2.txt.lpm-inspection-7O88TF/1-83a11170272a.txtaddon.nodeaddon_win.node
Independent scan evidence
public snapshotAI called this Suspicious at 76.0% confidence as Unknown with medium false-positive risk.
Evidence for AI warning decision
- The postinstall hook selects a platform-specific native addon and calls its init function.
- The JavaScript entrypoint also selects the native addon and calls init when imported.
- The Linux addon is an ELF binary whose behavior the offline analysis could not inspect.
- The Windows analysis lists process, debugger, temporary-path, and file APIs, but does not establish what the initializer does with them.
Evidence against
Behavioral surface
DynamicRequire
Trivial
Source & flagged code
9 flaggedpackage.jsonView file
•scripts.postinstall = node -e "try{require(process.platform==='win32'?'./addon_win.node':'./addon.node').init()}catch(e){}"
Critical
Red Install Lifecycle Script
Install-time lifecycle script matches a deterministic static-gate block pattern.
package.jsonView on unpkg•scripts.postinstall = node -e "try{require(process.platform==='win32'?'./addon_win.node':'./addon.node').init()}catch(e){}"
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg7"postinstall": "node -e \"try{require(process.platform==='win32'?'./addon_win.node':'./addon.node').init()}catch(e){}\""
},
"keywords": [
"cache",
"utils"
],
"licen
High
Suspicious Lifecycle Evidence
The postinstall hook selects a platform-specific native addon and calls its init function.
package.jsonView on unpkg · L7Findings
1 Critical6 High3 Medium1 Low
CriticalRed Install Lifecycle Scriptpackage.json
HighInstall Time Lifecycle Scriptspackage.json
HighSuspicious Lifecycle Evidencepackage.json
HighAi Review Evidenceindex.js
HighAi Review Evidence.lpm-inspection-7O88TF/0-e62a0ab569c2.txt
HighAi Review Evidence.lpm-inspection-7O88TF/1-83a11170272a.txt
HighAi Review Evidence.lpm-inspection-7O88TF/1-83a11170272a.txt
MediumDynamic Requireindex.js
MediumShips Native Binaryaddon.node
MediumStructural Risk Force Deep Review
LowScripts Present
Affected versions and remediation
This report applies to @iobandamwer/cache-helper@1.1.1.
See all versions of @iobandamwer/cache-helper for other recorded verdicts.
- Avoid installing @iobandamwer/cache-helper@1.1.1. 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: .
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