Is CVE-2026-34236 actively exploited?

No active exploitation of CVE-2026-34236 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34236 be exploited remotely?

Yes. CVE-2026-34236 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34236?

CVE-2026-34236 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2026-34236

CRITICAL

CVE-2026-34236

CWE-331Published: April 1, 2026· Updated: Apr 7, 2026

9.8

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.3th

Official 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.

NVD Source

Technical Analysis

CVE-2026-34236 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.