VulnerabilityAnalyzed

CVE-2026-34236

Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs.

CRITICAL 9.8EPSS 0.22%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs. From version 8.0.0 to before version 8.19.0, in applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies. This issue has been patched in version 8.19.0.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.22% probability · 13th percentile
CISA KEV: Not listed
Weakness: CWE-331
Affected: auth0/auth0-php
Source: security-advisories@github.com

References

https://github.com/auth0/auth0-PHP/releases/tag/8.19.0Product, Release Notes
https://github.com/auth0/auth0-PHP/security/advisories/GHSA-w3wc-44p4-m4j7Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.