CVE-2025-48951: Auth0-PHP SDK Deserialization of Untrusted Data vulnerability

CVE-2025-48951 · Severity: medium · CVSS 4 · Published 2025-06-04

Auth0-PHP SDK Deserialization of Untrusted Data vulnerability

Technologies: auth0/auth0-php (Packagist). Vendors: Packagist.

Quick answers

Is CVE-2025-48951 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-48951 being exploited in the wild.
How severe is CVE-2025-48951?
Medium severity, with a CVSS score of 4, published 4 June 2025.
Which products and versions are affected?
auth0/auth0-php (Packagist) ECOSYSTEM:introduced=8.0.0-BETA3,fixed=8.3.1.
Is there a fix for CVE-2025-48951?
Yes. auth0/auth0-php (Packagist): upgrade to 8.3.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-48951?
Check whether you run auth0/auth0-php (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • auth0/auth0-php (Packagist): upgrade to 8.3.1 or later
    composer require auth0/auth0-php:^8.3.1

Affected products

  • auth0/auth0-php (Packagist) ECOSYSTEM:introduced=8.0.0-BETA3,fixed=8.3.1

Identifiers

  • CVE-2025-48951
  • GHSA-v9m8-9xxp-q492

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