CVE-2026-40190 | langchain-ai langsmith-sdk up to 0.5.17 set prototype pollution
A vulnerability marked as problematic has been reported in langchain-ai langsmith-sdk up to 0.5.17. Affected is the function Set. The manipulation leads to improperly controlled modification of object prototype attributes.
This vulnerability is uniquely identified as CVE-2026-40190. The attack is possible to be carried out remotely. No exploit exists.
It is suggested to upgrade the affected component.