CVE-2025-68129 | Auth0-PHP SDK has Improper Audience Validation

Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs. In applications built with the Auth0-PHP SDK, the audience validation in access tokens is performed improperly. Without proper validation, affected applications may accept ID tokens as Access tokens. Projects are affected if they use Auth0-PHP SDK versions between v8.0.0 and v8.17.0, or applications using the following SDKs that rely on the Auth0-PHP SDK versions between v8.0.0 and v8.17.0: Auth0/symfony versions between 5.0.0 and 5.5.0, Auth0/laravel-auth0 versions between 7.0.0 and 7.19.0, and/or Auth0/wordpress plugin versions between 5.0.0-BETA0 and 5.4.0. Auth0/Auth0-PHP version 8.18.0 contains a patch for the issue.

Published: 2025-12-17 Last update: 2026-03-05 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-68129 is rated Low Risk (34.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.06%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-68129

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-18 — 0.06% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-68129

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.6 5.2 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2025-68129

GitHub Security Advisory for CVE-2025-68129

GHSA-j2vm-wrq3-f7gf · Severity: medium · Ecosystem: composer — Auth0-PHP SDK has Improper Audience Validation

Affected software / configurations for CVE-2025-68129

Vendor Product Version Raw CPE
auth0 auth0-php >= 8.0.0, < 8.18.0 cpe:2.3:a:auth0:auth0-php:*:*:*:*:*:*:*:*
auth0 laravel-auth0 >= 7.0.0, < 7.20.0 cpe:2.3:a:auth0:laravel-auth0:*:*:*:*:*:laravel:*:*
auth0 symfony >= 5.0.0, < 5.6.0 cpe:2.3:a:auth0:symfony:*:*:*:*:*:*:*:*
auth0 wp-auth0 >= 5.0.0, < 5.5.0 cpe:2.3:a:auth0:wp-auth0:*:*:*:*:*:wordpress:*:*

References for CVE-2025-68129

URL Tags
https://github.com/auth0/auth0-PHP/commit/7fe700053aee609718460c123f00f53c511f0f7f Patch
https://github.com/auth0/auth0-PHP/releases/tag/8.18.0 Product Release Notes
https://github.com/auth0/auth0-PHP/security/advisories/GHSA-j2vm-wrq3-f7gf Vendor Advisory
https://github.com/auth0/laravel-auth0/commit/a1c3344dc0e5a36e8f56c8cfc535728d3d7558f3 Patch
https://github.com/auth0/laravel-auth0/releases/tag/7.20.0 Product Release Notes
https://github.com/auth0/laravel-auth0/security/advisories/GHSA-7hh9-gp72-wh7h Vendor Advisory
https://github.com/auth0/symfony/commit/0103d6f8dcef6996653fad1f823d1c167f472479 Patch
https://github.com/auth0/symfony/releases/tag/5.6.0 Product Release Notes
https://github.com/auth0/symfony/security/advisories/GHSA-f3r2-88mq-9v4g Vendor Advisory
https://github.com/auth0/wordpress/commit/b207c6f7fd06507b90c4e6bcc18a857ef9e018de Patch
https://github.com/auth0/wordpress/releases/tag/5.5.0 Product Release Notes
https://github.com/auth0/wordpress/security/advisories/GHSA-vvg7-8rmq-92g7 Vendor Advisory
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