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CVE-2026-84186— Incorrect access control in PrestaShop

Quick assessment

Affected
PrestaShop PrestaShop
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PrestaShop是美国PrestaShop公司开源的一套开源的电子商务解决方案。该方案提供多种支付方式、短消息提醒和商品图片缩放等功能。 PrestaShop 9.1.5之前版本和8.2.8之前版本存在授权问题漏洞，该漏洞源于Tools::getRemoteAddr()函数访问控制不当，当应用运行在反向代理、负载均衡或CDN后时错误处理X-Forwarded-For头，使用访问者控制的IP地址而非可信基础设施提供的地址，可能导致未认证远程攻击者伪造IP地址，绕过基于IP的控件（如维护模式白名单），伪造

CVSS 6.9 · Medium EPSS 0.54% · P45

Affected Version Matrix 2

VendorProduct Version RangeStatus
PrestaShop PrestaShop < 9.1.5 affected
< 8.2.8 affected
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I. Basic Information for CVE-2026-84186

Vulnerability Information
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Vulnerability Title
Incorrect access control in PrestaShop
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
PrestaShop 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PrestaShop是美国PrestaShop公司开源的一套开源的电子商务解决方案。该方案提供多种支付方式、短消息提醒和商品图片缩放等功能。 PrestaShop 9.1.5之前版本和8.2.8之前版本存在授权问题漏洞，该漏洞源于Tools::getRemoteAddr()函数访问控制不当，当应用运行在反向代理、负载均衡或CDN后时错误处理X-Forwarded-For头，使用访问者控制的IP地址而非可信基础设施提供的地址，可能导致未认证远程攻击者伪造IP地址，绕过基于IP的控件（如维护模式白名单），伪造
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
PrestaShop PrestaShop 0 ~ 9.1.5 -

II. Public POCs for CVE-2026-84186

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III. Intelligence Information for CVE-2026-84186

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Vendor Advisories for CVE-2026-84186 (1)

IV. Related Vulnerabilities

Same product: PrestaShop
Same vendor: PrestaShop
Same weakness: CWE-290

V. Comments for CVE-2026-84186

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