CVE-2020-5270— Open redirection when using back parameter of 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 1.7.6.0之后版本（1.7.6.5版本已修复）中的‘back’参数存在输入验证错误漏洞。攻击者可利用该漏洞将用户重定向恶意的网站或获取敏感信息和凭证。
Possible ATT&CK Techniques 1 AI
T1566.002 · Spearphishing Link
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I. Basic Information for CVE-2020-5270
Vulnerability Information
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Vulnerability Title
Open redirection when using back parameter of PrestaShop
Source: CVE Program / CVE List V5
Vulnerability Description
In PrestaShop between versions 1.7.6.0 and 1.7.6.5, there is an open redirection when using back parameter. The impacts can be many, and vary from the theft of information and credentials to the redirection to malicious websites containing attacker-controlled content, which in some cases even cause XSS attacks. So even though an open redirection might sound harmless at first, the impacts of it can be severe should it be exploitable. The problem is fixed in 1.7.6.5
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
PrestaShop 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PrestaShop是美国PrestaShop公司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 1.7.6.0之后版本（1.7.6.5版本已修复）中的‘back’参数存在输入验证错误漏洞。攻击者可利用该漏洞将用户重定向恶意的网站或获取敏感信息和凭证。
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 | >= 1.7.6.0, < 1.7.6.5 | - |
|
II. Public POCs for CVE-2020-5270
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2020-5270 (1)
Vendor Advisories for CVE-2020-5270 (1)
-
https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-375w-q56h-h7qc x_refsource_CONFIRM
Same Patch Batch · PrestaShop · 2020-04-20 · 14 CVEs total
| CVE-2020-5293 | 6.5 MEDIUM | Improper access control on product page with combinations, attachments and specific prices |
| CVE-2020-5264 | 4.4 MEDIUM | Reflected XSS in security compromised page of PrestaShop |
| CVE-2020-5265 | 4.4 MEDIUM | Reflected XSS on AdminAttributesGroups page of PrestaShop |
| CVE-2020-5269 | 4.1 MEDIUM | Reflected XSS on AdminFeatures page of PrestaShop |
| CVE-2020-5271 | 4.1 MEDIUM | Reflected XSS with dashboard calendar of PrestaShop |
| CVE-2020-5272 | 4.1 MEDIUM | Reflected XSS on Search page of PrestaShop |
| CVE-2020-5276 | 4.1 MEDIUM | Reflected XSS on AdminCarts page of PrestaShop |
| CVE-2020-5278 | 4.1 MEDIUM | Reflected XSS on Exception page of PrestaShop |
| CVE-2020-5279 | 4.1 MEDIUM | Improper Access Control for certain legacy controller in PrestaShop |
| CVE-2020-5285 | 4.1 MEDIUM | Reflected XSS with back parameter in PrestaShop |
| CVE-2020-5286 | 4.1 MEDIUM | Reflected XSS related in import page in PrestaShop |
| CVE-2020-5287 | 4.1 MEDIUM | Improper access control on customers search in PrestaShop |
| CVE-2020-5288 | 4.1 MEDIUM | Improper access control on product attributes page in PrestaShop |
IV. Related Vulnerabilities
Same product: PrestaShop
-
CVE-2026-44212
PrestaShop: Stored XSS executable in customer service view -
CVE-2026-33674
PrestaShop: Improper Use of Validation Framework -
CVE-2026-33673
PrestaShop has multiple stored XSS vulnerabilities via unpro -
CVE-2026-25597
PrestaShop has a time based enumeration in FO login form -
CVE-2025-1230
Cross-Site Scripting (XSS) vulnerability in Prestashop
Same vendor: PrestaShop
-
CVE-2026-54159
ps_facetedsearch: PHP Object Injection in faceted search cac -
CVE-2026-14846
Incorrect neutralisation in the PrestaShop firmware -
CVE-2026-44212
PrestaShop: Stored XSS executable in customer service view -
CVE-2026-33674
PrestaShop: Improper Use of Validation Framework -
CVE-2026-33673
PrestaShop has multiple stored XSS vulnerabilities via unpro
Same weakness: CWE-601
-
CVE-2026-81036
Stalwart Mail Server through 0.16.19 Authorization Code Disc -
CVE-2026-81029
OpenMetadata before 2.0.0 JWT Disclosure via Unvalidated SAM -
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Kimai before 2.53.0 Open Redirect via RelayState -
CVE-2026-79786
Coroot 1.20.2 through 1.24.5 Unvalidated Redirect URI in MCP -
CVE-2026-79662
Ech0 before 4.7.3 OAuth Redirect URI Validation Bypass
V. Comments for CVE-2020-5270
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