CVE-2025-3247

Contact Form 7 <= 6.0.5 - Order Replay Vulnerability

2025-04-15 16:56

Strategic Overview

Status: Patched in 6.0.6
Affected Plugin: Contact Form 7
Affected Version: <= 6.0.5
CVSS: 5.3Medium
Weakness type: CWE-354 · Improper Validation of Integrity Check Value
CVE: CVE-2025-3247

At a glance

CVE-2025-3247 is a medium-severity Improper Validation of Integrity Check Value vulnerability in the Contact Form 7 WordPress plugin, affecting versions <= 6.0.5. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 6.0.6; sites on affected versions should update now. Disclosed April 2025, reported by Asaf Mozes.

Vulnerability Overview

The Contact Form 7 plugin for WordPress is vulnerable to Order Replay in all versions up to, and including, 6.0.5 via the 'wpcf7_stripe_skip_spam_check' function due to insufficient validation on a user controlled key. This makes it possible for unauthenticated attackers to reuse a single Stripe PaymentIntent for multiple transactions. Only the first transaction is processed via Stripe, but the plugin sends a successful email message for each transaction, which may trick an administrator into fulfilling each order.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-354: Improper Validation of Integrity Check Value

The product does not validate or incorrectly validates the integrity check values or checksums of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.

Remediation

Update to version 6.0.6, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: Contact Form 7 6.0.6 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-3247 https://www.wordfence.com/threat-intel/vulnerabilities/id/38257dbf-288e-4028-af65-85f5389888ac https://nvd.nist.gov/vuln/detail/CVE-2025-3247

Related records

Other vulnerabilities in Contact Form 7

CVSS Vector

5.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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