CVE-2025-48951

CRITICALNVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 53% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs. Versions 8.0.0-BETA3 prior to 8.3.1 contain a vulnerability due to insecure deserialization of cookie data. If exploited, since SDKs process cookie content without prior authentication, a threat actor could send a specially crafted cookie containing malicious serialized data. Applications using the Auth0-PHP SDK are affected, as are applications using the Auth0/symfony, Auth0/laravel-auth0, or Auth0/wordpress SDKs, because those SDKsrely on the Auth0-PHP SDK versions from 8.0.0-BETA3 until 8.14.0. Version 8.3.1 contains a patch for the issue.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity93% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
47.4%
KEV
Not listed

Published

June 3, 2025

Last Modified

April 15, 2026

Advisory Details (5)

Auto-updated Jul 17, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Deserialization of Untrusted Data in Auth0 Wordpress Plugin · Advisory · auth0/wordpress · GitHub

https://github.com/auth0/wordpress/security/advisories/GHSA-862m-5253-832r
github Patch Available

Deserialization of Untrusted Data in Auth0 Symfony SDK · Advisory · auth0/symfony · GitHub

https://github.com/auth0/symfony/security/advisories/GHSA-98j6-67v3-mw34
github Patch Available

Deserialization of Untrusted Data in laravel-auth0 SDK · Advisory · auth0/laravel-auth0 · GitHub

https://github.com/auth0/laravel-auth0/security/advisories/GHSA-c42h-56wx-h85q
github Patch Available

Deserialization of Untrusted Data in Auth0-PHP SDK · Advisory · auth0/auth0-PHP · GitHub

https://github.com/auth0/auth0-PHP/security/advisories/GHSA-v9m8-9xxp-q492
github_commit Patch Available

commit 04b1f5daa8bd (auth0/auth0-PHP)

Patch available: auth0/auth0-PHP 8.3.4 (contains commit 04b1f5daa8bd)

https://github.com/auth0/auth0-PHP/commit/04b1f5daa8bdfebc5e740ec5ca0fb2df1648a715

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
auth0/auth0-php8.0.0 ... 8.3.0 (12 versions)8.3.1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 51× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 131 total refreshes for this CVE.

  1. 2026-07-23 02:57 UTCEG score recompute
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-48951?
CVE-2025-48951 is a critical vulnerability published on June 3, 2025. Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs. Versions 8.0.0-BETA3 prior to 8.3.1 contain a vulnerability due to insecure deserialization of cookie data. If exploited, since SDKs process cookie content without prior authentication, a threat actor could send a specially…
When was CVE-2025-48951 disclosed?
CVE-2025-48951 was first published in the National Vulnerability Database on June 3, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-48951 actively exploited?
CVE-2025-48951 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 47.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-48951?
CVE-2025-48951 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2025-48951?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-48951, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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