by Kastro
Paper/Archive/CVE-2026-34236

CVE-2026-34236

auth0 auth0-PHP — Auth0 PHP SDK Insufficient Entropy in Cookie Encryption

EPSS 0.2%CVSS 9.8
critical.is priorityof 100
32
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 13.1.131 × 202.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
auth0-PHP>= 8.0.0, < 8.19.0–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)8.2CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/auth0/auth0-PHP/security/advisories/GHSA-w3wc-44p4-m4j7refgithub.com/auth0/auth0-PHP/releases/tag/8.19.0