CVE-2021-39347Network attack vector

Authenticated payment-account misuse via unchecked customer identifier update

Published Oct 4, 2021 · Updated Mar 31, 2025

Missing authorization in Stripe for WooCommerce 3.0.0 through 3.3.9 allows remote authenticated users to charge another user's payment account. The save() method in includes/admin/class-wc-stripe-admin-user-edit.php accepts and stores a user-supplied Stripe customer identifier without a capability check. Any logged-in account that can reach the profile update path can associate itself with another site user's identifier and make purchases against that linked payment account.

CVSS severity4.3
Medium
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Stripe for WooCommerce 3.0.0 through 3.3.9 allows remote authenticated users to charge another user's payment account. The save() method in includes/admin/class-wc-stripe-admin-user-edit.php accepts and stores a user-supplied Stripe customer identifier without a capability check. Any logged-in account that can reach the profile update path can associate itself with another site user's identifier and make purchases against that linked payment account.

The record

CVE
CVE-2021-39347
Published
Oct 4, 2021
Updated
Mar 31, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862, T1657
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 4, 2021CVE publishedPublication date reported by the CVE source.
  2. Mar 31, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/A:N
4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1657Financial Theft

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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