Improper control of interaction frequency in Shopware - CVE-2025-32378
Published: April 8, 2025 / Updated: May 20, 2026
Vulnerability identifier: #VU131902
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-32378
CWE-ID: CWE-799
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause unsolicited newsletter sign-ups.
The vulnerability exists due to improper control of interaction frequency in the newsletter opt-in functionality when registering an account with an arbitrary email address and enabling newsletter subscription from the account page. A remote attacker can register accounts using victim email addresses and enable newsletter subscriptions to cause unsolicited newsletter sign-ups.
The issue occurs with the default double-opt-in configuration, where newsletter subscriptions can become instantly active without requiring confirmation links to be clicked.
Affected software
Shopware
How to mitigate CVE-2025-32378
Install security update from vendor's website.
Shopware - addressed in versions 6.5.8.17, 6.6.10.3, 6.7.0.0