CVE-2026-34236 json
Auth0 PHP SDK Insufficient Entropy in Cookie Encryption
published 2026-04-01 7 mo ago modified 2026-10-26 13 d ago also GHSA-w3wc-44p4-m4j7 , EUVD-2026-17979
- cvss
- 8.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist auth0/auth0-php 8.19.0
- auth0 auth0-php 8.19.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.22% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | auth0/auth0-php | >=8.0.0, <8.19.0 |
8.19.0 |
Affected products
- auth0 auth0-PHP
Classification
- Weakness
-
- CWE-331 Insufficient Entropy
References
-
github.com
/auth0/auth0-PHP/security/advisories/GHSA-w3wc-44p4-m4j7
web, vendor-advisory
-
github.com
/auth0/auth0-PHP/releases/tag/8.19.0
web, product, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-34236
advisory
-
github.com
/auth0/auth0-PHP
package
Sources
- CVE List CVE-2026-34236
- GitHub Advisory GHSA-w3wc-44p4-m4j7
- NVD CVE-2026-34236
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.