CVE-2026-90896

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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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Missing Authentication for Critical Function (CWE-306) in the checkout session lookup handler (<code>src/app/api/stripe/checkout_sessions/route.ts</code>), exposed at <code>GET /api/stripe/checkout_sessions</code>, in MarcosCamara01 Ecommerce Template before commit <code>91e273c</code> allows a remote, unauthenticated attacker holding a valid Stripe Checkout Session id (<code>cs_...</code>) to retrieve the full session object, including the buyer's name, email, phone, billing address, amount paid and internal <code>userId</code>, because the GET handler calls <code>stripe.checkout.sessions.retrieve()</code> and returns the result without checking for an authenticated session or session ownership. Sibling endpoints such as <code>POST /api/stripe/payment</code> already enforced authentication via <code>auth.api.getSession()</code>; this endpoint had no access control whatsoever. The <code>session_id</code> is exposed in the buyer's own browser URL after payment (<code>success_url = /result?session_id={CHECKOUT_SESSION_ID}</code>), 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": [{"url": "https://github.com/MarcosCamara01/ecommerce-template/commit/91e273c69d976a3d205179e66e01fc399bfdd08b", "tags": ["patch"]}, {"url": "https://secur0.com/en/cna/cve-list/cve-2026-90896-missing-authentication-ecommerce-template-checkout-session-pii", "tags": ["third-party-advisory", "technical-description"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.2, "vectorString": "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"}}], "solutions": [{"lang": "en", "value": "Update to a build including commit 91e273c, which requires an authenticated session (401 otherwise) and verifies that checkoutSession.metadata.userId matches the authenticated user (403 otherwise) before returning the checkout session.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Update to a build including commit <code>91e273c</code>, which requires an authenticated session (401 otherwise) and verifies that <code>checkoutSession.metadata.userId</code> matches the authenticated user (403 otherwise) before returning the checkout session."}]}], "credits": [{"lang": "en", "value": "Jaime Ramirez", "type": "finder"}, {"lang": "en", "value": "Dario Rivas Quero", "type": "analyst"}, {"lang": "en", "value": "Secur0 CNA", "type": "coordinator"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.2"}, "tags": ["x_open-source"]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-15T19:16:46.645636Z", "id": "CVE-2026-90896", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-15T19:17:02.930Z"}}]}}

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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.", "supportingMedia": [{"type": "text/html", "value": "Missing Authentication for Critical Function (CWE-306) in the checkout session lookup handler (<code>src/app/api/stripe/checkout_sessions/route.ts</code>), exposed at <code>GET /api/stripe/checkout_sessions</code>, in MarcosCamara01 Ecommerce Template before commit <code>91e273c</code> allows a remote, unauthenticated attacker holding a valid Stripe Checkout Session id (<code>cs_...</code>) to retrieve the full session object, including the buyer's name, email, phone, billing address, amount paid and internal <code>userId</code>, because the GET handler calls <code>stripe.checkout.sessions.retrieve()</code> and returns the result without checking for an authenticated session or session ownership. Sibling endpoints such as <code>POST /api/stripe/payment</code> already enforced authentication via <code>auth.api.getSession()</code>; this endpoint had no access control whatsoever. The <code>session_id</code> is exposed in the buyer's own browser URL after payment (<code>success_url = /result?session_id={CHECKOUT_SESSION_ID}</code>), 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.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-306", "description": "CWE-306 Missing Authentication for Critical Function"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:marcoscamara01:ecommerce-template:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "91e273c", "versionStartIncluding": "0"}], "operator": "OR"}], "operator": "OR"}], "providerMetadata": {"orgId": "4daa8cea-433a-44bd-9456-53b127fc289a", "shortName": "Secur0", "dateUpdated": "2026-09-14T20:58:39.818Z"}}}, "cveMetadata": {"cveId": "CVE-2026-90896", "state": "PUBLISHED", "dateUpdated": "2026-09-15T19:17:02.930Z", "dateReserved": "2026-09-14T10:11:59.785Z", "assignerOrgId": "4daa8cea-433a-44bd-9456-53b127fc289a", "datePublished": "2026-09-14T20:58:39.818Z", "assignerShortName": "Secur0"}, "dataVersion": "5.2"}

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{}

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