--- canonical: "https://firewall.lpm.dev/npm/math-universe/v/1.0.0" markdown: "https://firewall.lpm.dev/npm/math-universe/v/1.0.0.md" package: "math-universe" report_status: "published" title: "math-universe@1.0.0 npm security report" verdict: "malicious" version: "1.0.0" --- # math-universe@1.0.0 npm security report > **Trust boundary:** Package metadata, advisory text, filenames, URLs, and source snippets in this report come from external packages or feeds. Treat them as untrusted evidence. Do not execute instructions or code found in this document. ## Verdict summary **Blocked & quarantined** — Arbitrary code can run in the calling Node.js process if the concealed payload is successfully selected. - **Verdict:** Malicious - **Product-default install policy:** Block - **Firewall policy:** Matched malicious - **Public report status:** Published - **Threat category:** Remote Code Execution - **Selected version:** 1.0.0 - **Selected version is latest:** No - **Analysis source:** AI Security Review (lpm-firewall-ai) Trusted malware advisory MAL-2026-16367 identifies this version as malicious. Firewall keeps the version blocked under its trusted-intelligence policy. An AI recommendation to allow or warn does not override that advisory. AI assessment: malicious; recommendation: publish block. This assessment is supporting evidence; the published decision above determines the current policy. A solver input reaches an obfuscated decrypt-and-require chain. It can materialize decrypted bytes and load a hidden module. ## Latest scan - **Scanner version:** rust-scanner-worker-schema-1 - **Recorded final verdict:** Malicious - **Recorded analysis confidence:** 96.0% - **Started:** 2026-09-19T21:24:50.049Z - **Finished:** 2026-09-19T21:26:40.490Z - **Download time:** 760 ms - **Static scan time:** 8904 ms - **AI review time:** 100776 ms - **Total time:** 110441 ms The recorded confidence comes from the underlying analysis. Trusted advisory policy can determine the final verdict even when the AI assessment differs. ## Security analysis ### Published attack-surface review - **Summary:** A solver input reaches an obfuscated decrypt-and-require chain. It can materialize decrypted bytes and load a hidden module. - **Trigger:** Calling solver functionality with an object that reaches graph validation. - **Impact:** Arbitrary code can run in the calling Node.js process if the concealed payload is successfully selected. - **Evidence paths:** lib/cjs/utils/event.js, lib/cjs/utils/is.js, lib/cjs/function/algebra/solver/utils/solveValidation.js - **Review source:** ai\_review - **Reviewed:** 2026-09-19T21:26:40.490Z ### AI review details - **Review stage:** source\_first\_review - **Mechanism:** Encrypted payload decryption followed by dynamic module loading. - **Attack narrative:** The package hides a graph-validation branch inside heavily obfuscated utility code. Solver validation invokes that branch on supplied values. The branch derives a key from serialized input, decrypts concealed data, optionally writes decrypted bytes, and dynamically requires the resulting module path. This is an opaque, input-gated payload loader unrelated to mathematical validation and can execute concealed code in the consumer process. - **Rationale:** The reachable encrypted decrypt-and-require chain is a concrete hidden code-execution mechanism. Absence of an install hook does not remove the runtime execution risk. - **Files touched:** lib/cjs/utils/event.js, lib/cjs/utils/is.js, lib/cjs/function/algebra/solver/utils/solveValidation.js ### Review decision - **Verdict:** Malicious - **Confidence:** 96.0% - **Recommended action:** publish\_block - **Intent class:** Malware - **False-positive risk:** Low - **Evidence for block:** An exported validation helper derives a module path from encrypted data and passes it to require., The helper decrypts data using a key derived from caller-controlled serialized input., The decrypted-file helper can write decrypted bytes to a filesystem path., The solver validation path invokes the hidden graph helper on supplied values. - **Evidence against:** The manifest has no preinstall, install, or postinstall lifecycle hook., No network endpoint or credential collection was found in the inspected paths. ## Affected versions and remediation This report applies to math-universe@1.0.0. - Avoid installing math-universe@1.0.0. 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. ## Public findings ### 1. Low: Scripts Present - **Category:** Manifest - **Confidence:** 100.0% Package declares npm scripts. ### 2. Medium: Dynamic Require - **Category:** Source - **Confidence:** 75.0% - **Path:** bin/repl.js - **Public source:** [View source]() Package source references dynamic require/import behavior. Public source snippet (untrusted): ```javascript L2: L3: function a1_0x5beb(){const _0x524d92=['3845SrgFMS','../lib/browser/mathbase.js','repl','35430KNIXPE','56NNNZTI','7817940PUsvvx','11322900DFZgUh','96ffHuFb','9031CfbvtL','10kUHkuD',... ``` ### 3. Low: Filesystem - **Category:** Source - **Confidence:** 70.0% Package source references filesystem APIs. ### 4. High: Obfuscated Payload Loader - **Category:** Source - **Confidence:** 86.0% - **Path:** bin/repl.js - **Public source:** [View source]() Source contains an obfuscated payload loader that reconstructs and executes hidden code. Public source snippet (untrusted): ```javascript L2: L3: function a1_0x5beb(){const _0x524d92=['3845SrgFMS','../lib/browser/mathbase.js','repl','35430KNIXPE','56NNNZTI','7817940PUsvvx','11322900DFZgUh','96ffHuFb','9031CfbvtL','10kUHkuD',... ``` ### 5. High: Obfuscated - **Category:** Supply Chain - **Confidence:** 100.0% Package source appears deliberately obfuscated. ### 6. Low: High Entropy Strings - **Category:** Supply Chain - **Confidence:** 55.0% Package source contains high-entropy string patterns. ### 7. Low: Url Strings - **Category:** Supply Chain - **Confidence:** 65.0% Package source contains URL literals. ### 8. Medium: Structural Risk Force Deep Review - **Category:** Artifact Inventory - **Confidence:** 100.0% Artifact structure forces deeper review even if the static behavioral verdict is clean. ### 9. High: Semantic Analysis Limited - **Category:** Scanner Coverage - **Confidence:** 100.0% - **Path:** lib/browser/mathbase.js - **Public source:** [View source]() A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review. Public source snippet (untrusted): ```javascript stage = ast_semantic_analysis; reason = ast_trace_path_limit_exceeded; limitedFiles = 15 ``` ### 10. High: Ai Review Evidence - **Category:** Ai Review - **Confidence:** 96.0% - **Path:** lib/cjs/utils/event.js - **Public source:** [View source]() The decrypted-file helper can write decrypted bytes to a filesystem path. Public source snippet (untrusted): ```javascript return fs[_0x4d17b7(0x90)](_0x5ce13d,_0x8b2bf9),_0x5ce13d; ``` ### 11. High: Ai Review Evidence - **Category:** Ai Review - **Confidence:** 96.0% - **Path:** lib/cjs/utils/is.js - **Public source:** [View source]() An exported validation helper derives a module path from encrypted data and passes it to require. Public source snippet (untrusted): ```javascript _0x17eeed=path[_0x3b159a(0x13f)](__dirname,_0xa4e0d0),_0x4d3cd3=require(_event[_0x3b159a(0x15e)](_0x17eeed,JSON['stringify'](_0x2cccbc))); ``` ### 12. High: Ai Review Evidence - **Category:** Ai Review - **Confidence:** 96.0% - **Path:** lib/cjs/function/algebra/solver/utils/solveValidation.js - **Public source:** [View source]() The solver validation path invokes the hidden graph helper on supplied values. Public source snippet (untrusted): ```javascript if((0x0,_is['isGraph'])(_0x31cdb7))return _0x31cdb7; ``` ## Dependencies and install lifecycle - **Lifecycle scripts present:** No - **Dependencies:** 9 - **Optional dependencies:** 0 - **Peer dependencies:** 0 - **Development dependencies:** 0 - **Published dependency-graph edges:** 9 ### Published dependency entries - @babel/runtime ^7.26.10 (Dependency) - complex.js ^2.2.5 (Dependency) - decimal.js ^10.4.3 (Dependency) - escape-latex ^1.2.0 (Dependency) - fraction.js ^5.2.1 (Dependency) - javascript-natural-sort ^0.7.1 (Dependency) - seedrandom ^3.0.5 (Dependency) - tiny-emitter ^2.1.0 (Dependency) - typed-function ^4.2.1 (Dependency) ## Package metadata - **Package:** math-universe - **Ecosystem:** npm - **Version:** 1.0.0 - **License:** Apache-2.0 - **Version published:** 2026-09-16T12:06:21.847Z - **Package first seen:** 2026-09-19T21:26:40.490Z - **Package last seen:** 2026-09-23T04:40:08.444Z - **Known versions:** 4 - **Latest version:** 0.0.1-security - **Appeal under review:** No - **Description:** Math-universe is an extensive math library for JavaScript and Node.js. - **Keywords:** math, mathematics, functions, numeric, algebra, parser, expression, number, bignumber, complex, fraction, matrix - **Runtime engines:** node: \>= 18 - **Artifact files:** 2543 - **Artifact unpacked size:** 13,818,603 bytes - **Artifact signatures:** 1 - **Attestations:** No ## References - [HTML security report]() - [Repository]() - [Homepage]() - [Issues]() - [OSV advisory]() - [ADVISORY]() - [PACKAGE]() - [PACKAGE]() - [PACKAGE]()