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Fencer Vulns
high 8.9

CVE-2026-31889 json

Shopware has a potential take over of app credentials

published 2026-03-11 7 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-11307 , GHSA-c4p7-rwrg-pf6p

cvss
8.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

Shopware is an open commerce platform. Prior to 6.6.10.15 and 6.7.8.1, a vulnerability in the Shopware app registration flow that could, under specific conditions, allow attackers to take over the communication channel between a shop and an app. The legacy app registration flow used HMAC‑based authentication without sufficiently binding a shop installation to its original domain. During re‑registration, the shop-url could be updated without proving control over the previously registered shop or domain. This made targeted hijacking of app communication feasible if an attacker possessed the relevant app‑side secret. By abusing app re‑registration, an attacker could redirect app traffic to an attacker‑controlled domain and potentially obtain API credentials intended for the legitimate shop. This vulnerability is fixed in 6.6.10.15 and 6.7.8.1.

Patch / fix

  • packagist shopware/platform 6.6.10.15, 6.7.8.1
  • packagist shopware/core 6.6.10.15, 6.7.8.1
  • shopware shopware 6.6.10.15, 6.7.8.1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
7 mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
GitHub 3.1 8.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L

Affected packages

ecosystem package affected fixed in
packagist shopware/platform
>=6.7.0.0, <6.7.8.1
<6.6.10.15
6.7.8.1
6.6.10.15
packagist shopware/core
>=6.7.0.0, <6.7.8.1
<6.6.10.15
6.7.8.1
6.6.10.15

Affected products

  • shopware core
  • shopware platform

Classification

Weakness
  • CWE-290 Authentication Bypass by Spoofing

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.