CVE-2025-3479Network attack vector

Duplicate fulfillment via replayed Stripe PaymentIntent

Published Apr 17, 2025 · Updated Apr 8, 2026

Order replay in WPMU DEV Forminator 1.42.0 and earlier allows remote attackers to trigger false order-success notifications. The handle_stripe_single function insufficiently validates a user-controlled Stripe PaymentIntent key and treats a replayed intent as a successful transaction. Exploitation requires a Stripe-enabled form and a valid previously paid intent; Stripe processes only the first charge, while repeated success emails can cause duplicate fulfillment.

CVSS severity5.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Order replay in WPMU DEV Forminator 1.42.0 and earlier allows remote attackers to trigger false order-success notifications. The handle_stripe_single function insufficiently validates a user-controlled Stripe PaymentIntent key and treats a replayed intent as a successful transaction. Exploitation requires a Stripe-enabled form and a valid previously paid intent; Stripe processes only the first charge, while repeated success emails can cause duplicate fulfillment.

The record

CVE
CVE-2025-3479
Published
Apr 17, 2025
Updated
Apr 8, 2026
Vendor
WPMU DEV
Product
Forminator
Classifications
CWE-354, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=1.42.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPMU DEV · Forminatorversion=0 <=1.42.0

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-354Improper Validation of Integrity Check Value
T1565.001Stored 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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Your stack

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