Use of Less Trusted Source in PrestaShop - #VU144204
Published: August 18, 2026
Vulnerability identifier: #VU144204
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-348
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass access controls and spoof the client IP address.
The vulnerability exists due to use of a less trusted source in X-Forwarded-For header handling when processing requests forwarded through a reverse proxy, load balancer, or CDN. A remote attacker can supply a forged X-Forwarded-For header value to bypass access controls and spoof the client IP address.
Only deployments behind a reverse proxy, load balancer, or CDN are affected; shops where visitors connect directly to the web server are not affected.
Affected software
PrestaShop
Remediation
Install security update from vendor's website.
PrestaShop - addressed in versions 8.2.8, 9.1.5