{"action":"Upgrade langflow to 1.9.0 or later.","affected":[{"fixed":"1.9.0","introduced":"0"}],"component":"langflow","cve_ids":["CVE-2026-33873"],"ecosystem":"PyPI","epss":0.01452,"exploited":false,"fixed_versions":["1.9.0"],"ghsa_id":"GHSA-v8hw-mh8c-jxfc","id":"tcs_01M5KFZNBBHFHE5GYN81EMD8Q2","modified_at":"2026-06-06T01:00:08.177275641Z","published_at":"2026-03-26T18:31:36Z","references":["https://osv.dev/vulnerability/GHSA-v8hw-mh8c-jxfc","https://github.com/langflow-ai/langflow/security/advisories/GHSA-v8hw-mh8c-jxfc","https://nvd.nist.gov/vuln/detail/CVE-2026-33873","https://github.com/pypa/advisory-database/tree/main/vulns/langflow/PYSEC-2026-82.yaml","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/lfx/src/lfx/services/settings/auth.py#L71-L87","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/lfx/src/lfx/custom/validate.py#L441-L443","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/lfx/src/lfx/custom/validate.py#L394-L399","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/lfx/src/lfx/custom/validate.py#L241-L272","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/backend/base/langflow/services/auth/utils.py#L39-L53","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/backend/base/langflow/services/auth/utils.py#L156-L163","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/backend/base/langflow/api/v1/login.py#L96-L135","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/backend/base/langflow/api/utils/core.py#L38","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/backend/base/langflow/agentic/services/assistant_service.py#L58-L79","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/backend/base/langflow/agentic/services/assistant_service.py#L259-L300","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/backend/base/langflow/agentic/services/assistant_service.py#L142-L156","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/backend/base/langflow/agentic/helpers/validation.py#L27-L47","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/backend/base/langflow/agentic/helpers/code_extraction.py#L11-L53","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/backend/base/langflow/agentic/api/schemas.py#L20-L31","https://github.com/langflow-ai/langflow/blob/f7f4d1e70ba5eecd18162ec96f3571c2cfbcd1fc/src/backend/base/langflow/agentic/api/router.py#L252-L297","https://github.com/langflow-ai/langflow"],"severity":{"label":"critical","score":9.9},"sources":[{"source":"osv","source_id":"GHSA-v8hw-mh8c-jxfc","url":"https://osv.dev/vulnerability/GHSA-v8hw-mh8c-jxfc"},{"source":"nvd","source_id":"CVE-2026-33873","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33873"}],"summary":"Langflow has Authenticated Code Execution in Agentic Assistant Validation"}