{"cve":"CVE-2026-41182","nvd":{"published":"2026-04-23T02:16:16.123","modified":"2026-10-26T21:10:00.170","status":"Awaiting Analysis","description":"LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. Prior to version 0.5.19 of the JavaScript SDK and version 0.7.31 of the Python SDK, the 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. Version 0.5.19 of the JavaScript SDK and version 0.7.31 of the Python SDK fix the issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-200","CWE-359","CWE-532"],"references":["https://github.com/langchain-ai/langsmith-sdk/security/advisories/GHSA-rr7j-v2q5-chgv"],"products":[],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-41182","score":0.00214,"percentile":0.1167,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-rr7j-v2q5-chgv","url":"https://osv.dev/vulnerability/GHSA-rr7j-v2q5-chgv","summary":"LangSmith SDK: Streaming token events bypass output redaction","modified":"2026-09-10T03:51:03.075090864Z","packages":[{"ecosystem":"npm","name":"langsmith","purl":"pkg:npm/langsmith","ranges":["<0.5.19"],"fixed":["0.5.19"]},{"ecosystem":"PyPI","name":"langsmith","purl":"pkg:pypi/langsmith","ranges":["<0.7.31"],"fixed":["0.7.31"]}]},{"id":"PYSEC-2026-2583","url":"https://osv.dev/vulnerability/PYSEC-2026-2583","summary":"LangSmith SDK: Streaming token events bypass output redaction","modified":"2026-07-13T16:31:59.981609575Z","packages":[{"ecosystem":"PyPI","name":"langsmith","purl":"pkg:pypi/langsmith","ranges":["<0.7.31"],"fixed":["0.7.31"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}