Hugging Face LeRobot up to 0.5.1 Pickle pickle.loads deserialization

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Hugging Face LeRobot up to 0.5.1. It has been rated as critical. This vulnerability affects the function pickle.loads of the component Pickle Handler. The manipulation leads to deserialization. This vulnerability is traded as CVE-2026-25874. It is possible to initiate the attack remotely. There is no exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Hugging Face LeRobot up to 0.5.1. This issue affects the function pickle.loads of the component Pickle Handler. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was shared by Valentin Lobstein as 3047. It is possible to read the advisory at chocapikk.com. The identification of this vulnerability is CVE-2026-25874 since 02/06/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: github.com

Timelineinfo

02/06/2026 CVE reserved
04/23/2026 +75 days Advisory disclosed
04/23/2026 +0 days VulDB entry created
07/17/2026 +85 days VulDB entry last update

Sourcesinfo

Advisory: 3047
Researcher: Valentin Lobstein
Status: Confirmed

CVE: CVE-2026-25874 (🔒)
GCVE (CVE): GCVE-0-2026-25874
GCVE (VulDB): GCVE-100-359219

Entryinfo

Created: 04/23/2026 23:22
Updated: 07/17/2026 05:31
Changes: 04/23/2026 23:22 (69), 07/17/2026 05:31 (12)
Complete: 🔍
Cache ID: 216::103

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