CVE-2026-103671 Open redirect in AmazonPay Plugin (4.0 series)
Attackers can redirect users to arbitrary sites during checkout, potentially stealing account information in EC-CUBE AmazonPay plugins.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-103671?
CVE-2026-103671 is a medium-severity vulnerability in EC-CUBE CO.,LTD. AmazonPay Plugin (4.0 series), published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
External control of assumed-Immutable web parameter issue exists in EC-CUBE plugin (for EC-CUBE 4 series) "AmazonPay Plugin". If exploited, the user may be redirected to an arbitrary website during the ordering process. As a result, user's account information may be obtained.
Weakness: CWE-472
Which versions are affected by CVE-2026-103671?
How do I fix CVE-2026-103671?
No fix has been published for CVE-2026-103671 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-103671 being exploited?
There is no known exploitation of CVE-2026-103671 in the wild and no public exploit code.
Sources
Also known as GHSA-9xxh-8f25-hpwm.