CVE-2026-90896: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-qfqr-55gf-4v3j
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CWE-306
Published
Advisory Summary

CVE-2026-90896 is a HIGH security vulnerability vulnerability (CWE-306: Missing Authentication for Critical Function) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-90896 at a Glance

CVE Identifier CVE-2026-90896
GHSA Identifier GHSA-qfqr-55gf-4v3j
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-306: Missing Authentication for Critical Function
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-90896

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-90896, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-306: Missing Authentication for Critical Function, where the product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Missing Authentication for Critical Function (CWE-306) in the checkout session lookup handler (src/app/api/stripe/checkout_sessions/route.ts), exposed at GET /api/stripe/checkout_sessions, in MarcosCamara01 Ecommerce Template before commit 91e273c allows a remote, unauthenticated attacker holding a valid Stripe Checkout Session id (cs_...) to retrieve the full session object, including the buyer's name, email, phone, billing address, amount paid and internal userId, because the GET handler calls stripe.checkout.sessions.retrieve() and returns the result without checking for an authenticated session or session ownership. Sibling endpoints such as POST /api/stripe/payment already enforced authentication via auth.api.getSession(); this endpoint had no access control whatsoever. The session_id is exposed in the buyer's own browser URL after payment (success_url = /result?session_id={CHECKOUT_SESSION_ID}), so it leaks through Referer headers, analytics tools, server access logs and shared-machine browser history, resulting in disclosure of the buyer's personal data to an unauthenticated actor.

References

NVD — CVE-2026-90896 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90896
Security Fix Commit FIX COMMIT
https://github.com/MarcosCamara01/ecommerce-template/commit/91e273c69d976a3d205179e66e01fc399bfdd08b
secur0.com/en/cna/cve-list/cve... WEB
https://secur0.com/en/cna/cve-list/cve-2026-90896-missing-authentication-ecommerce-template-checkout-session-pii

Frequently Asked Questions

What is CVE-2026-90896?
CVE-2026-90896 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-306: Missing Authentication for Critical Function.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-90896?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-90896?
CVE-2026-90896 is classified under CWE-306: Missing Authentication for Critical Function (The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.).
How can I check Maven dependencies for CVE-2026-90896?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qfqr-55gf-4v3j",
  "modified" : "2026-09-14T21:31:57Z",
  "published" : "2026-09-14T21:31:57Z",
  "aliases" : [ "CVE-2026-90896" ],
  "details" : "Missing Authentication for Critical Function (CWE-306) in the checkout session lookup handler (src/app/api/stripe/checkout_sessions/route.ts), exposed at GET /api/stripe/checkout_sessions, in MarcosCamara01 Ecommerce Template before commit 91e273c allows a remote, unauthenticated attacker holding a valid Stripe Checkout Session id (cs_...) to retrieve the full session object, including the buyer's name, email, phone, billing address, amount paid and internal userId, because the GET handler calls stripe.checkout.sessions.retrieve() and returns the result without checking for an authenticated session or session ownership. Sibling endpoints such as POST /api/stripe/payment already enforced authentication via auth.api.getSession(); this endpoint had no access control whatsoever. The session_id is exposed in the buyer's own browser URL after payment (success_url = /result?session_id={CHECKOUT_SESSION_ID}), so it leaks through Referer headers, analytics tools, server access logs and shared-machine browser history, resulting in disclosure of the buyer's personal data to an unauthenticated actor.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-90896"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/MarcosCamara01/ecommerce-template/commit/91e273c69d976a3d205179e66e01fc399bfdd08b"
  }, {
    "type" : "WEB",
    "url" : "https://secur0.com/en/cna/cve-list/cve-2026-90896-missing-authentication-ecommerce-template-checkout-session-pii"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-306" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-14T21:17:42Z"
  }
}