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Fencer Vulns
medium 5.3

CVE-2025-32378 json

Shopware's default newsletter opt-in settings allow for mass sign-up abuse

published 2025-04-09 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-10546 , GHSA-4h9w-7vfp-px8m

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits
0
none known

Summary

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.

Patch / fix

  • packagist shopware/core 6.5.8.17, 6.6.10.3, 6.7.0.0-rc2
  • packagist shopware/platform 6.5.8.17, 6.6.10.3, 6.7.0.0-rc2
  • shopware shopware 6.5.8.17, 6.6.10.3, 6.7.0.0-rc2

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 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
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CNA 4.0 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/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
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist shopware/core
>=6.6.0.0-rc1, <6.6.10.3
>=6.7.0.0-rc1, <6.7.0.0-rc2
<6.5.8.17
6.6.10.3
6.7.0.0-rc2
6.5.8.17
packagist shopware/platform
>=6.6.0.0-rc1, <6.6.10.3
>=6.7.0.0-rc1, <6.7.0.0-rc2
<6.5.8.17
6.6.10.3
6.7.0.0-rc2
6.5.8.17

Affected products

  • shopware shopware

Classification

Weakness
  • CWE-799 Improper Control of Interaction Frequency
  • CWE-1188 Initialization of a Resource with an Insecure Default

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.