CVE-2026-25874 LeRobot Unsafe Deserialization Remote Code Execution via gRPC
An unauthenticated attacker can achieve arbitrary code execution on LeRobot servers or clients by sending crafted pickle payloads via gRPC.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-25874?
CVE-2026-25874 is a critical unsafe deserialization vulnerability in Hugging Face LeRobot, published on 23 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
LeRobot through 0.5.1 contains an unsafe deserialization vulnerability in the async inference pipeline where pickle.loads() is used to deserialize data received over unauthenticated gRPC channels without TLS in the policy server and robot client components. An unauthenticated network-reachable attacker can achieve arbitrary code execution on the server or client by sending a crafted pickle payload through the SendPolicyInstructions, SendObservations, or GetActions gRPC calls.
Weakness: CWE-502
Which versions are affected by CVE-2026-25874?
It affects 1 product.
Products include Huggingface Lerobot.
How do I fix CVE-2026-25874?
No fix has been published for CVE-2026-25874 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-25874 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25874 exists.
Sources
Also known as GHSA-f7vj-73pm-m822.