Opencart
CVE-2020-29470
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 4.8 (MEDIUM). Attack characteristics: network attack vector, low complexity, high privileges required, user interaction required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application. |
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Alert meAnalysisAI
OpenCart 3.0.3.6 is affected by cross-site scripting (XSS) in the Subject field of mail. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in composer
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. OpenCart 3.0.3.6 is affected by cross-site scripting (XSS) in the Subject field of mail. This vulnerability can allow an attacker to inject the XSS payload in the Subject field of the mail and each time any user will open that mail of the website, the XSS triggers and the attacker can able to steal the cookie according to the crafted payload. Affected products include: Opencart.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
OpenCart 3.0.3.6 is affected by cross-site scripting (XSS) in the Subject field of mail. This vulnerability can allow an attacker to inject the XSS payload in the Subject field of the mail and each time any user will open that mail of the website, the XSS triggers and the attacker can able to steal the cookie according to the crafted payload.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Exploit-DB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
Affected Products (CPE)NVD
OpenCart CMS v4.0.2.2 was discovered to lack a protective mechanism on its login page against excessive login attempts,
OpenCart 3.0.3.8 contains a session fixation vulnerability that allows attackers to hijack user sessions by injecting ar
OpenCart Core 4.0.2.3 contains a SQL injection vulnerability that allows unauthenticated attackers to manipulate databas
An issue discovered in OpenCart 4.0.0.0 to 4.0.2.3 allows authenticated backend users having common/security write privi
Path Traversal in OpenCart versions 4.0.0.0 to 4.0.2.2 allows an authenticated user with access/modify privilege on the
/upload/catalog/controller/account/password.php in OpenCart through 3.0.2.0 has CSRF via the index.php?route=account/pas
This affects versions of the package opencart/opencart from 0.0.0. Rated high severity (CVSS 8.1), this vulnerability is
The "program extension upload" feature in OpenCart through 3.0.2.0 has a six-step process (upload, install, unzip, move,
SQL injection vulnerability in the updateAmazonOrderTracking function in upload/admin/model/openbay/amazon.php in OpenCa
OpenCart 4.0.2.3 is vulnerable to Server-Side Template Injection (SSTI) via the Theme Editor Function. Rated high severi
This affects versions of the package opencart/opencart from 4.0.0.0. Rated high severity (CVSS 7.2), this vulnerability
This affects versions of the package opencart/opencart from 4.0.0.0. Rated high severity (CVSS 7.2), this vulnerability
GitHub PoC