CVE-2026-34046

Summary : CVE-2026-34046 affects Langflow prior to 1.5.1, where the _read_flow) path could bypass ownership checks when AUTO_LOGIN was false, allowing any authenticated user to read, modify, or delete flows owned by others, potentially exposing embedded plaintext API keys. Affected component : La...

CVE-2026-33873 Langflow has Authenticated Code Execution in Agentic Assistant Validation

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.9.0, the Agentic Assistant feature in Langflow executes LLM-generated Python code during its validation phase. Although this phase appears intended to validate generated component code, the...

CVE-2026-33873 Langflow has Authenticated Code Execution in Agentic Assistant Validation

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.9.0, the Agentic Assistant feature in Langflow executes LLM-generated Python code during its validation phase. Although this phase appears intended to validate generated component code, the...

CVE-2026-33873

CVE-2026-33873 affects Langflow. Before v1.9.0, the Agentic Assistant feature can execute LLM-generated Python code during its validation phase, reaching dynamic execution sinks and instantiating the generated class server-side. In deployments where an attacker can access the Agentic Assistant an...

CVE-2026-33873

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.9.0, the Agentic Assistant feature in Langflow executes LLM-generated Python code during its validation phase. Although this phase appears intended to validate generated component code, the...

CVE-2026-33873 Langflow has Authenticated Code Execution in Agentic Assistant Validation

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.9.0, the Agentic Assistant feature in Langflow executes LLM-generated Python code during its validation phase. Although this phase appears intended to validate generated component code, the...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization via the readflow helper in src/backend/base/langflow/api/v1/flows.py. An attacker can read, modify, or delete another user's flow by supplying that flow's UUID to the GET, PATCH, or DELETE /api/v1/flow/flowid...

EUVD-2026-16850

Langflow: Authenticated Users Can Read, Modify, and Delete Any Flow via Missing Ownership Check...

Langflow: Authenticated Users Can Read, Modify, and Delete Any Flow via Missing Ownership Check

Vulnerability IDOR in GET/PATCH/DELETE /api/v1/flow/flowid The readflow helper in src/backend/base/langflow/api/v1/flows.py branched on the AUTOLOGIN setting to decide whether to filter by userid. When AUTOLOGIN was False i.e., authentication was enabled, neither branch enforced an ownership chec...

langflow-nightly (=1.8.0.dev24) potentially affected by CVE-2026-5027 via langflow-base (=0.7.2)

langflow-base PYPI version =0.7.2 is affected by a known vulnerability. The following packages have a transitive dependency on langflow-base and may be impacted: - langflow-nightly =1.8.0.dev24 Source cves: CVE-2026-5027 Source advisory: SNYK:PYTHON-LANGFLOWBASE-15842030...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization via the downloadimage endpoint. An attacker can access and download image files belonging to any flow by knowing or guessing the flow ID and file name. Remediation There is no fixed version for langflow-base...

langflow-nightly (=1.8.0.dev24) potentially affected by CVE-2026-5022 via langflow-base (=0.7.2)

langflow-base PYPI version =0.7.2 is affected by a known vulnerability. The following packages have a transitive dependency on langflow-base and may be impacted: - langflow-nightly =1.8.0.dev24 Source cves: CVE-2026-5022 Source advisory: SNYK:PYTHON-LANGFLOWBASE-15840036...

langflow-nightly (=1.8.0.dev24) potentially affected by CVE-2026-5026 via langflow-base (=0.7.2)

langflow-base PYPI version =0.7.2 is affected by a known vulnerability. The following packages have a transitive dependency on langflow-base and may be impacted: - langflow-nightly =1.8.0.dev24 Source cves: CVE-2026-5026 Source advisory: SNYK:PYTHON-LANGFLOWBASE-15814086...

langflow-nightly (=1.8.0.dev24) potentially affected by CVE-2026-5025 via langflow-base (=0.7.2)

langflow-base PYPI version =0.7.2 is affected by a known vulnerability. The following packages have a transitive dependency on langflow-base and may be impacted: - langflow-nightly =1.8.0.dev24 Source cves: CVE-2026-5025 Source advisory: SNYK:PYTHON-LANGFLOWBASE-15813866...

CVE-2026-5027 Langflow - Path Traversal Arbitrary File Write via upload_user_file

The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences '../'...

CVE-2026-5027 Langflow - Path Traversal Arbitrary File Write via upload_user_file

The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences '../'...

CVE-2026-5027

Langflow

CVE-2026-5026 Langflow - Stored XSS via Malicious SVG Upload

The '/api/v1/files/images/flowid/filename' endpoint serves SVG files with the 'image/svg+xml' content type without sanitizing their content. Since SVG files can contain embedded JavaScript, an attacker can upload a malicious SVG that executes arbitrary JavaScript when viewed by other users, leadi...

CVE-2026-5026

LangFlow exposes stored XSS via SVG uploads: the endpoint /api/v1/files/images/{flow_id}/{file_name} serves SVGs as image/svg+xml without sanitization, allowing embedded JavaScript to run when viewed by users and potentially exfiltrate cookies/JWTs. The vulnerability stems from unsanitized SVG co...

CVE-2026-5025 Langflow - Application Logs Exposed to All Authenticated Users

The '/logs' and '/logs-stream' endpoints in the log router allow any authenticated user to read the full application log buffer. These endpoints only require basic authentication 'getcurrentactiveuser' without any privilege checks e.g., 'issuperuser'...