CVE-2025-32378
Shopware's default newsletter opt-in settings allow for mass sign-up abuse
Shopware is an open source e-commerce software platform. Prior to 6.6.10.3 or 6.5.8.17, the default settings for double-opt-in allow for mass unsolicited newsletter sign-ups without confirmation. Default settings are Newsletter: Double Opt-in set to active, Newsletter: Double opt-in for registered customers set to disabled, and Log-in & sign-up: Double opt-in on sign-up set to disabled. With these settings, anyone can register an account on the shop using any e-mail-address and then check the check-box in the account page to sign up for the newsletter. The recipient will receive two mails confirming registering and signing up for the newsletter, no confirmation link needed to be clicked for either. In the backend the recipient is set to “instantly active”. This vulnerability is fixed in 6.6.10.3 or 6.5.8.17.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Shopware's default newsletter opt-in settings allow for mass sign-up abuse
Shopware is an open source e-commerce software platform. Prior to 6.6.10.3 or 6.5.8.17, the default settings for double-opt-in allow for mass unsolicited newsletter sign-ups without confirmation. Default settings are Newsletter: Double Opt-in set to active, Newsletter: Double opt-in for registered customers set to disabled, and Log-in & sign-up: Double opt-in on sign-up set to disabled. With these settings, anyone can register an account on the shop using any e-mail-address and then check the check-box in the account page to sign up for the newsletter. The recipient will receive two mails confirming registering and signing up for the newsletter, no confirmation link needed to be clicked for either. In the backend the recipient is set to “instantly active”. This vulnerability is fixed in 6.6.10.3 or 6.5.8.17.
- Record
CVE-2025-32378- CVSS 4.0
- 6.9 Medium
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 - Weakness
- CWE-799
- Updated
- 2026-11-02
EUVDEUVD-2025-10546
Shopware is an open source e-commerce software platform. Prior to 6.6.10.3 or 6.5.8.17, the default settings for double-opt-in allow for mass unsolicited newsletter sign-ups without confirmation. Default settings are Newsletter: Double Opt-in set to active, Newsletter: Double opt-in for registered customers set to disabled, and Log-in & sign-up: Double opt-in on sign-up set to disabled. With these settings, anyone can register an account on the shop using any e-mail-address and then check the check-box in the account page to sign up for the newsletter. The recipient will receive two mails confirming registering and signing up for the newsletter, no confirmation link needed to be clicked for either. In the backend the recipient is set to “instantly active”. This vulnerability is fixed in 6.6.10.3 or 6.5.8.17.
- Record
EUVD-2025-10546- CVSS 4.0
- 6.9 Medium
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-4h9w-7vfp-px8m
Shopware default newsletter opt-in settings allow for mass sign-up abuse
Impact
Currently the default settings for double-opt-in allow for mass unsolicited newsletter sign-ups without confirmation.
Default settings are:
Newsletter: Double Opt-in - active
Newsletter: Double opt-in for registered customers - disabled
Log-in & sign-up: Double opt-in on sign-up - disabled
With these settings, anyone can register an account on the shop using any e-mail-address and then check the check-box in the account page to sign up for the newsletter. The recipient will receive two mails confirming registering and signing up for the newsletter, no confirmation link needed to be clicked for either. In the backend the recipient is set to “instantly active”.
Patches
Update to Shopware 6.6.10.3 or 6.5.8.17
Workarounds
For older versions of 6.4, corresponding security measures are also available via a plugin. For the full range of functions, we recommend updating to the latest Shopware version.
- Record
GHSA-4h9w-7vfp-px8m- CVSS 4.0
- 2.7 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:U - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-799, CWE-1188
- Updated
- 2026-11-02
NVD
Shopware is an open source e-commerce software platform. Prior to 6.6.10.3 or 6.5.8.17, the default settings for double-opt-in allow for mass unsolicited newsletter sign-ups without confirmation. Default settings are Newsletter: Double Opt-in set to active, Newsletter: Double opt-in for registered customers set to disabled, and Log-in & sign-up: Double opt-in on sign-up set to disabled. With these settings, anyone can register an account on the shop using any e-mail-address and then check the check-box in the account page to sign up for the newsletter. The recipient will receive two mails confirming registering and signing up for the newsletter, no confirmation link needed to be clicked for either. In the backend the recipient is set to “instantly active”. This vulnerability is fixed in 6.6.10.3 or 6.5.8.17.
- Record
CVE-2025-32378- CVSS 4.0
- 6.9 Medium
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-799
- Updated
- 2026-11-02
OSV
Shopware's default newsletter opt-in settings allow for mass sign-up abuse
Shopware is an open source e-commerce software platform. Prior to 6.6.10.3 or 6.5.8.17, the default settings for double-opt-in allow for mass unsolicited newsletter sign-ups without confirmation. Default settings are Newsletter: Double Opt-in set to active, Newsletter: Double opt-in for registered customers set to disabled, and Log-in & sign-up: Double opt-in on sign-up set to disabled. With these settings, anyone can register an account on the shop using any e-mail-address and then check the check-box in the account page to sign up for the newsletter. The recipient will receive two mails confirming registering and signing up for the newsletter, no confirmation link needed to be clicked for either. In the backend the recipient is set to “instantly active”. This vulnerability is fixed in 6.6.10.3 or 6.5.8.17.
- Record
CVE-2025-32378- CVSS 4.0
- 6.9 Medium
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 - Weakness
- CWE-799
- Updated
- 2026-11-02
OSVGHSA-4h9w-7vfp-px8m
Shopware default newsletter opt-in settings allow for mass sign-up abuse
Impact
Currently the default settings for double-opt-in allow for mass unsolicited newsletter sign-ups without confirmation.
Default settings are:
Newsletter: Double Opt-in - active
Newsletter: Double opt-in for registered customers - disabled
Log-in & sign-up: Double opt-in on sign-up - disabled
With these settings, anyone can register an account on the shop using any e-mail-address and then check the check-box in the account page to sign up for the newsletter. The recipient will receive two mails confirming registering and signing up for the newsletter, no confirmation link needed to be clicked for either. In the backend the recipient is set to “instantly active”.
Patches
Update to Shopware 6.6.10.3 or 6.5.8.17
Workarounds
For older versions of 6.4, corresponding security measures are also available via a plugin. For the full range of functions, we recommend updating to the latest Shopware version.
- Record
GHSA-4h9w-7vfp-px8m- CVSS 4.0
- 2.7 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:U - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-1188, CWE-799
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
shopware/corePackagist |
6.6.0.0-rc1 up to 6.6.10.3 | 6.6.10.3 |
shopware/platformPackagist |
6.6.0.0-rc1 up to 6.6.10.3 | 6.6.10.3 |
shopware/platformPackagist |
6.7.0.0-rc1 up to 6.7.0.0-rc2 | 6.7.0.0-rc2 |
shopware/corePackagist |
6.7.0.0-rc1 up to 6.7.0.0-rc2 | 6.7.0.0-rc2 |
shopware/corePackagist |
before 6.5.8.17 | 6.5.8.17 |
shopware/platformPackagist |
before 6.5.8.17 | 6.5.8.17 |
shopware/corePackagist |
6.6.0.0-rc1 up to 6.6.10.3, plus listed versions v6.6.0.0v6.6.0.0-rc1v6.6.0.0-rc2v6.6.0.0-rc3v6.6.0.0-rc4 Show 27 moreShow lessv6.6.0.0-rc5v6.6.0.0-rc6v6.6.0.0-rc7v6.6.0.1v6.6.0.2v6.6.0.3v6.6.1.0v6.6.1.1v6.6.1.2v6.6.10.0v6.6.10.1v6.6.10.2v6.6.2.0v6.6.3.0v6.6.3.1v6.6.4.0v6.6.4.1v6.6.5.0v6.6.5.1v6.6.6.0v6.6.6.1v6.6.7.0v6.6.7.1v6.6.8.0v6.6.8.1v6.6.8.2v6.6.9.0 |
6.6.10.3 |
shopware/platformPackagist |
6.6.0.0-rc1 up to 6.6.10.3, plus listed versions v6.6.0.0v6.6.0.0-rc1v6.6.0.0-rc2v6.6.0.0-rc3v6.6.0.0-rc4 Show 27 moreShow lessv6.6.0.0-rc5v6.6.0.0-rc6v6.6.0.0-rc7v6.6.0.1v6.6.0.2v6.6.0.3v6.6.1.0v6.6.1.1v6.6.1.2v6.6.10.0v6.6.10.1v6.6.10.2v6.6.2.0v6.6.3.0v6.6.3.1v6.6.4.0v6.6.4.1v6.6.5.0v6.6.5.1v6.6.6.0v6.6.6.1v6.6.7.0v6.6.7.1v6.6.8.0v6.6.8.1v6.6.8.2v6.6.9.0 |
6.6.10.3 |
shopware/platformPackagist |
6.7.0.0-rc1 up to 6.7.0.0-rc2, plus listed versions v6.7.0.0-rc1 |
6.7.0.0-rc2 |
shopware/corePackagist |
6.7.0.0-rc1 up to 6.7.0.0-rc2, plus listed versions v6.7.0.0-rc1 |
6.7.0.0-rc2 |
shopware/corePackagist |
before 6.5.8.17, plus listed versions 6.3.0.06.3.0.16.3.0.26.3.1.06.3.1.1 Show 45 moreShow less6.3.2.06.3.2.16.3.3.06.3.3.16.3.4.06.3.4.16.3.5.06.3.5.16.3.5.26.3.5.36.3.5.46.4.0.06.4.0.0-RC16.4.1.06.4.1.16.4.1.26.4.10.06.4.10.16.4.11.06.4.11.16.4.12.06.4.13.06.4.14.06.4.15.06.4.15.16.4.15.26.4.16.06.4.16.16.4.17.06.4.17.16.4.17.26.4.18.06.4.18.16.4.19.06.4.2.06.4.2.16.4.20.06.4.20.16.4.20.26.4.3.06.4.3.16.4.4.06.4.4.16.4.5.06.4.5.1 |
6.5.8.17 |
shopware/platformPackagist |
before 6.5.8.17, plus listed versions 6.3.0.06.3.0.16.3.0.26.3.1.06.3.1.1 Show 45 moreShow less6.3.2.06.3.2.16.3.3.06.3.3.16.3.4.06.3.4.16.3.5.06.3.5.16.3.5.26.3.5.36.3.5.46.4.0.06.4.0.0-RC16.4.1.06.4.1.16.4.1.26.4.10.06.4.10.16.4.11.06.4.11.16.4.12.06.4.13.06.4.14.06.4.15.06.4.15.16.4.15.26.4.16.06.4.16.16.4.17.06.4.17.16.4.17.26.4.18.06.4.18.16.4.19.06.4.2.06.4.2.16.4.20.06.4.20.16.4.20.26.4.3.06.4.3.16.4.4.06.4.4.16.4.5.06.4.5.1 |
6.5.8.17 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-32378 is a medium vulnerability (CVSS 6.9) in Shopware, published April 9, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 24th percentile. Fixed in shopware/core 6.6.10.3.
References
Left out here: 132 versions. The JSON record has them.