CVE-2026-125377
Deferred Deferred - Pending Action

Pig 4.1.2 Missing Authorization Exposes OAuth2 Client Secrets

Publication date: 2026-11-10

Last updated on: 2026-11-10

Assigner: VulnCheck

Description
Pig before 4.1.2 contains a missing authorization vulnerability in SysClientController that allows authenticated users without client-management permission to retrieve OAuth2 client secrets via GET /client/{clientId} and GET /client/export. Attackers can fetch clientSecret values for seed clients like pig, app, and daemon or export the client table, then obtain tokens using those clients' configured grant types.

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Meta Information

Published
2026-11-10
Last Modified
2026-11-10
Generated
2026-11-10
AI Q&A
2026-11-10
EPSS Evaluated
N/A
NVD
CVE-2026-125377
EUVD
EUVD-2026-120540

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
pig-mesh pig From 0 (inc) to 4.1.2 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

Pig before 4.1.2 has a missing authorization flaw in SysClientController. Authenticated users without client-management permission can retrieve OAuth2 client secrets via specific endpoints. Attackers can fetch clientSecret values for default clients or export the entire client table, then use these secrets to obtain tokens based on the clients' grant types.

Detection Guidance

Check Pig versions before 4.1.2 for the vulnerability. Inspect logs for unauthorized GET /client/{clientId} or GET /client/export requests. Monitor network traffic for suspicious OAuth2 client secret retrieval attempts.

Impact Analysis

An attacker could gain unauthorized access to sensitive OAuth2 client secrets, potentially allowing them to impersonate legitimate clients, access protected resources, or perform actions on behalf of users. This could lead to data breaches, unauthorized transactions, or further lateral movement within the system.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR's data protection principles and HIPAA's security requirements. Organizations may face compliance violations, legal penalties, and reputational damage due to potential data exposure.

Mitigation Strategies

Upgrade Pig to version 4.1.2 or later to address the missing authorization flaw. Review and restrict client-management permissions for authenticated users. Rotate exposed OAuth2 client secrets if they were accessed.

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