# CVE-2025-27519: Cognita Arbitrary File Write

> Attackers can achieve remote code execution in Docker containers by exploiting a path traversal vulnerability in the file upload endpoint.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Mar 2025
- **Updated:** 7 Mar 2025

## What is CVE-2025-27519?

CVE-2025-27519 is a critical path traversal vulnerability in truefoundry cognita, published on 7 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cognita is a RAG (Retrieval Augmented Generation) Framework for building modular, open source applications for production by TrueFoundry. A path traversal issue exists at /v1/internal/upload-to-local-directory which is enabled when the Local env variable is set to true, such as when Cognita is setup using Docker. Because the docker environment sets up the backend uvicorn server with auto reload enabled, when an attacker overwrites the /app/backend/__init__.py file, the file will automatically be reloaded and executed. This allows an attacker to get remote code execution in the context of the Docker container. This vulnerability is fixed in commit a78bd065e05a1b30a53a3386cc02e08c317d2243.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2025-27519?


## How do I fix CVE-2025-27519?

No fix has been published for CVE-2025-27519 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-27519 being exploited?

There is no known exploitation of CVE-2025-27519 in the wild and no public exploit code.

Public exploit code:

- PoC exploit for Below privilege escalation (CVE-2025-27591) allowing local root access via symlink manipulation in world-writable log directory. (github_poc): https://github.com/Diabl0xE/CVE-2025-27519

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-27519 and fix it if it is affected.

What it is: CVE-2025-27519 is a critical path traversal vulnerability in truefoundry cognita, published on 7 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-27519 in the wild and no public exploit code.

Affected product: truefoundry cognita. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-27519/ (Markdown: https://insights.sbomify.com/CVE-2025-27519/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-27519
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-27519
- OSV: https://osv.dev/vulnerability/CVE-2025-27519

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-27519/
Summaries are generated and may contain mistakes; the official description above is the record.