CVE-2026-9832Network attack vectorHinoki check available

Order-status manipulation via unsigned Stripe webhooks

Published Sep 19, 2026 · Updated Sep 19, 2026

Improper signature verification in ThemeHigh Payment Gateway of Stripe for WooCommerce 5.0.8 and earlier allows remote attackers to alter order states. EH_Stripe_Webhook_Handler::handle() decodes and trusts the raw POST body when eh_stripe_webhook_secret is empty, bypassing Stripe\Webhook::constructEvent(). Exploitation requires an unset signing secret and permits forged payment, failure, dispute, and refund events without authentication.

CVSS severity5.3
Medium
EPSS probability0.38%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper signature verification in ThemeHigh Payment Gateway of Stripe for WooCommerce 5.0.8 and earlier allows remote attackers to alter order states. EH_Stripe_Webhook_Handler::handle() decodes and trusts the raw POST body when eh_stripe_webhook_secret is empty, bypassing Stripe\Webhook::constructEvent(). Exploitation requires an unset signing secret and permits forged payment, failure, dispute, and refund events without authentication.

The record

CVE
CVE-2026-9832
Published
Sep 19, 2026
Updated
Sep 19, 2026
Vendor
ThemeHigh
Product
Payment Gateway of Stripe for WooCommerce
Classifications
CWE-347, T1565.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=5.0.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ThemeHigh · Payment Gateway of Stripe for WooCommerceversion=0 <=5.0.8

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
T1565.003Runtime Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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