CVE-2026-84186 Incorrect access control in PrestaShop
Attackers can spoof IP addresses via X-Forwarded-For headers in reverse proxy setups, bypassing IP-based controls like maintenance mode allowlists and evading security logs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-84186?
CVE-2026-84186 is a medium-severity vulnerability in PrestaShop, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Vulnerability involving incorrect access control in the Tools::getRemoteAddr() function in PrestaShop, which allows the client’s IP address to be spoofed via the X-Forwarded-For header when the application is running behind a reverse proxy, load balancer or CDN. The application incorrectly processes the IP address string and uses the address controlled by the visitor rather than the one provided by the trusted infrastructure, allowing an unauthenticated remote attacker to cause the application to interpret their connection as originating from an arbitrary IP address. This condition allows IP-based controls, such as the maintenance mode allowlist, to be bypassed, as well as enabling the forgery of security and audit logs and the evasion of third-party mechanisms that rely on the IP address, such as geolocation checks, fraud detection or request throttling.
Weakness: CWE-290
Which versions are affected by CVE-2026-84186?
How do I fix CVE-2026-84186?
No fix has been published for CVE-2026-84186 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-84186 being exploited?
There is no known exploitation of CVE-2026-84186 in the wild and no public exploit code.
Sources
Also known as GHSA-24v7-phg9-x7cg.