CVE-2026-25874
LeRobot Unsafe Deserialization Remote Code Execution via gRPC
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.
INFO
Published Date :
April 23, 2026, 8:16 p.m.
Last Modified :
April 28, 2026, 7:01 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Replace pickle with a safer serialization format.
- Validate and sanitize all incoming data.
- Implement authentication and TLS for gRPC.
- Update the policy server and robot client.
Public PoC/Exploit Available at Github
CVE-2026-25874 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-25874.
| URL | Resource |
|---|---|
| https://chocapikk.com/posts/2026/lerobot-pickle-rce/ | Exploit Mitigation Third Party Advisory |
| https://github.com/huggingface/lerobot/issues/3047 | Exploit Issue Tracking Third Party Advisory |
| https://github.com/huggingface/lerobot/issues/3134 | Issue Tracking |
| https://github.com/huggingface/lerobot/pull/3048 | Issue Tracking Patch |
| https://www.vulncheck.com/advisories/lerobot-unsafe-deserialization-remote-code-execution-via-grpc | Third Party Advisory Exploit |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-25874 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-25874
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-25874 vulnerability anywhere in the article.
-
CybersecurityNews
Hugging Face LeRobot Vulnerability Enables Unauthenticated RCE Attacks
A critical, currently unpatched remote code execution (RCE) vulnerability has been disclosed in LeRobot, Hugging Face’s popular open-source machine learning framework for real-world robotics. Tracked ... Read more
-
The Hacker News
Critical Unpatched Flaw Leaves Hugging Face LeRobot Open to Unauthenticated RCE
Cybersecurity researchers have disclosed details of a critical security flaw impacting LeRobot, Hugging Face's open-source robotics platform with nearly 24,000 GitHub stars, that could be exploited to ... Read more
The following table lists the changes that have been made to the
CVE-2026-25874 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 28, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:huggingface:lerobot:*:*:*:*:*:python:*:* versions up to (including) 0.5.1 Added Reference Type VulnCheck: https://chocapikk.com/posts/2026/lerobot-pickle-rce/ Types: Exploit, Mitigation, Third Party Advisory Added Reference Type VulnCheck: https://github.com/huggingface/lerobot/issues/3047 Types: Exploit, Issue Tracking, Third Party Advisory Added Reference Type VulnCheck: https://github.com/huggingface/lerobot/issues/3134 Types: Issue Tracking Added Reference Type VulnCheck: https://github.com/huggingface/lerobot/pull/3048 Types: Issue Tracking, Patch Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/lerobot-unsafe-deserialization-remote-code-execution-via-grpc Types: Exploit, Third Party Advisory -
CVE Modified by [email protected]
Apr. 23, 2026
Action Type Old Value New Value Changed Description LeRobot 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. 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. -
CVE Modified by [email protected]
Apr. 23, 2026
Action Type Old Value New Value Added Reference https://chocapikk.com/posts/2026/lerobot-pickle-rce/ -
New CVE Received by [email protected]
Apr. 23, 2026
Action Type Old Value New Value Added Description LeRobot 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-502 Added Reference https://github.com/huggingface/lerobot/issues/3047 Added Reference https://github.com/huggingface/lerobot/issues/3134 Added Reference https://github.com/huggingface/lerobot/pull/3048 Added Reference https://www.vulncheck.com/advisories/lerobot-unsafe-deserialization-remote-code-execution-via-grpc