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CVE-2026-34236

Auth0 PHP SDK Insufficient Entropy in Cookie Encryption

Published: Apr 1, 2026Updated: Apr 7, 2026 Sources: CVE List NVDCWE-331
8.2HIGH
NVD MITRE
EPSS Score
0.2%
Top 87.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:CC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-331

Affected Products

auth0
commercialaka login by auth0, auth0.js, nextjs-auth0
auth0-PHPSaaS
Security Products / identity-access-mgmt
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-34236?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://github.com/auth0/auth0-PHP/security/advisories/GHSA-w3wc-44p4-m4j7
github.com
https://github.com/auth0/auth0-PHP/releases/tag/8.19.0
github.com
News mentions
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