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High 7.1

Cross-Site Scripting (XSS) in Simple Stripe Checkout

CVE-2025-49963 First seen on SecPulse

Summary

Cross-site scripting in Simple Stripe Checkout (CVE-2025-49963). Risk of unauthorized operations or information disclosure.

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2025-49963 has been found in Simple Stripe Checkout.
Risk of unauthorized operations or information disclosure. CVSS score: 7.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Simple Stripe Checkout CVE-2025-49963" on the vendor's site.

CVE-2025-49963 (Simple Stripe Checkout) — CWE-79 / CVSS v3 7.1
Attack vector: remote (network-reachable) / unauthenticated
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

What is the problem

Cross-site scripting (XSS) (CWE-79) exists in Simple Stripe Checkout.

Affected scope

Check the vendor advisory for the affected versions of Simple Stripe Checkout.

Severity

Severity: High (CVSS 7.1/10). Risk of unauthorized operations or information disclosure.

How to fix

Update to the patched release per vendor advisory.

Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposureidentify
    Audit SBOM/dependencies for affected components.

    資産台帳・SBOM・依存マニフェストで Simple Stripe Checkout を使っているサービスとバージョンを洗い出す。

  2. 2
    Post-deployment verificationverify
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Original description The description as published by the source.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in growniche Simple Stripe Checkout simple-stripe-checkout allows Reflected XSS.This issue affects Simple Stripe Checkout: from n/a through <= 1.1.28.

Source: NIST National Vulnerability Database NVD

References

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