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              "value": "\u003cp\u003eIBM strongly recommends addressing the vulnerability now by upgrading \u003ca href=\"https://pypi.org/project/langflow/1.12.5/\" rel=\"nofollow\"\u003eLangflow OSS to version 1.12.5.\u003c/a\u003e\u003c/p\u003e\u003cp\u003eFor Langflow OSS versions 1.0.0 - 1.12.4, follow the \u003ca href=\"https://docs.langflow.org/release-notes\" rel=\"nofollow\"\u003ePrepare to upgrade instructions and release-specific configuration changes\u003c/a\u003e, including backing up your existing installation, then follow the \u003ca href=\"https://docs.langflow.org/get-started-installation\" rel=\"nofollow\"\u003eLangflow OSS installation instructions\u003c/a\u003e to install version 1.12.5 and test your flows. For deployments using MCP stdio, also apply the configuration controls in Workarounds and Mitigations.\u003c/p\u003e\u003cp\u003eThis bulletin also discloses fixes delivered in prior releases: CVE-2026-107366 was fixed in version 1.9.0; CVE-2026-18894 was fixed in version 1.11.2; and CVE-2026-77817 was fixed in version 1.11.5. Version 1.12.5 includes these fixes.\u003c/p\u003e"
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              "value": "\u003cp\u003eIBM strongly recommends applying the following configuration controls to deployments using MCP stdio in addition to upgrading Langflow OSS to version 1.12.5. These controls do not replace the upgrade.\u003c/p\u003e\u003cp\u003eSet \u003ccode\u003eLANGFLOW_MCP_SERVER_INTERPRETER_HARDENING=true\u003c/code\u003e to reject direct shell-script execution, and set \u003ccode\u003eLANGFLOW_CUSTOM_COMPONENT_ADMIN_ONLY=true\u003c/code\u003e to block non-admin MCP stdio access. Restart the Langflow service after updating its environment configuration. These restrictions can require changes to existing MCP server launch configurations and limit which users can use MCP stdio.\u003c/p\u003e\u003cp\u003eFor public workflows, retain the default restriction on custom components. Explicitly enabling \u003ccode\u003eLANGFLOW_ALLOW_PUBLIC_CUSTOM_COMPONENTS\u003c/code\u003e permits custom component execution and changes the default protection described for CVE-2026-18894.\u003c/p\u003e\u003cp\u003eFor CVE-2026-77817, upgrading prevents the identified secret disclosure in new flow and project exports. Revoke or rotate any credentials exposed in previously exported files; upgrading does not remove secrets from copies already exported.\u003c/p\u003e"
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