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GHSA-4h9w-7vfp-px8mmedium5.3

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.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

shopware/core Packagist
Affected rangeRecorded fix
From 6.6.0.0-rc1 before 6.6.10.3Ecosystem versions6.6.10.3
From 6.7.0.0-rc1 before 6.7.0.0-rc2Ecosystem versions6.7.0.0-rc2
Earlier releases before 6.5.8.17Ecosystem versions6.5.8.17

Version evidence: OSV · GHSA-4h9w-7vfp-px8m

View original version evidence (149 explicit versions)
shopware/platform Packagist
Affected rangeRecorded fix
From 6.6.0.0-rc1 before 6.6.10.3Ecosystem versions6.6.10.3
From 6.7.0.0-rc1 before 6.7.0.0-rc2Ecosystem versions6.7.0.0-rc2
Earlier releases before 6.5.8.17Ecosystem versions6.5.8.17

Version evidence: OSV · GHSA-4h9w-7vfp-px8m

View original version evidence (149 explicit versions)

Original source description

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.

References