@iobandamwer/cache-helper@1.0.9
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
Manual ReviewIndependent AI assessment: manual_review. LPM AI review remains unresolved.
The postinstall hook and entrypoint both activate native code, while the available analyses do not resolve that code's behavior. This supports manual review, but does not establish a concrete attack.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Package installation or importing index.js.
Impact
The native code may perform actions that could not be resolved through static inspection.
Mechanism
Both paths load and initialize a platform-specific native addon; analysis is incomplete for the Windows addon and unsupported for the Unix addon.
AI rationale
The postinstall hook and entrypoint both activate native code, while the available analyses do not resolve that code's behavior. This supports manual review, but does not establish a concrete attack.
Evidence
package.jsonindex.js.lpm-inspection-2bSGTf/0-6a274d6b5417.txt.lpm-inspection-2bSGTf/1-1ad1a7d45ac9.txtaddon.nodeaddon_win.node
Independent scan evidence
public snapshotAI called this Manual Review at 91.0% confidence as Unknown with high false-positive risk.
AI review observations
- package.json defines a postinstall hook that loads and initializes a platform-selected native addon.
- index.js loads and initializes the same native addon when imported.
- The Unix addon analysis identifies an unrecognized artifact and says its behavior remains unresolved.
- The Windows addon analysis reports uninspected native call targets, so its behavior is unresolved.
Evidence against
Behavioral surface
DynamicRequire
Trivial
Source & flagged code
8 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 unpkg5"main": "index.js",
"scripts": {
"postinstall": "node -e \"try{require(process.platform==='win32'?'./addon_win.node':'./addon.node').init()}catch(e){}\"
High
Suspicious Lifecycle Evidence
package.json defines a postinstall hook that loads and initializes a platform-selected native addon.
package.jsonView on unpkg · L5Findings
1 Critical5 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-2bSGTf/0-6a274d6b5417.txt
HighAi Review Evidence.lpm-inspection-2bSGTf/1-1ad1a7d45ac9.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@1.0.9.
See all versions of @iobandamwer/cache-helper for other recorded verdicts.
- Avoid installing @iobandamwer/cache-helper@1.0.9. 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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