Is CVE-2026-34236 in the CISA KEV catalog?

No. CVE-2026-34236 is not currently on the CISA Known Exploited Vulnerabilities list.

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

CVE-2026-34236 has a CVSS v3 base score of 8.2 (HIGH).

What is the EPSS score for CVE-2026-34236?

CVE-2026-34236 has an EPSS score of 0.22% (13th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-34236?

Upgrade auth0-php to 8.19.0 or later.

CVE & CISA-KEV Catalog

CVE-2026-34236

HIGH

8.2

CVSS v3

NVD

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.

CWE-331

How to fix

Remediation Available

auth0-phpNVD

Affected:>= 8.0.0, < 8.19.0Fixed in:8.19.0CVE-2026-34236derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

Exploit Intelligence

0.22%probability of exploitation in 30 days

13thpercentile

Low risk: more likely to be exploited than 13% of all known CVEs.

References

Vendor Advisory1

github.com

Release Notes1

github.com

Embed a live status badge for CVE-2026-34236

Markdown

[![CVE-2026-34236](https://tridentstack.com/cve/badge/CVE-2026-34236.svg)](https://tridentstack.com/cve/CVE-2026-34236)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-34236"><img src="https://tridentstack.com/cve/badge/CVE-2026-34236.svg" alt="CVE-2026-34236"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-07.