SEPTEMBER 17, 2026
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Case File

CVE-2026-90896

HIGH · CVSS 8.2 EPSS 0.45% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-14 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The vulnerability allows unauthenticated attackers to access sensitive information from a Stripe Checkout Session, including personal details of the buyer, due to a lack of authentication checks in the checkout session lookup handler. This flaw can lead to significant data exposure, as attackers can exploit the session ID found in the user's browser URL to retrieve the full session object. E-commerce platforms utilizing the MarcosCamara01 Ecommerce Template should prioritize remediation to protect customer data and maintain compliance with privacy regulations.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

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CVE
CVE-2026-90896
Severity
HIGH
CVSS
8.2
EPSS
0.45%

Original NVD Description

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.