NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
🐘
🐘 Packagist
Not in CISA KEV
MEDIUM severity

CVE-2020-29470 — opencart

MEDIUM

CVE-2020-29470 is a medium-severity (CVSS 4.8) Cross-site Scripting (XSS) vulnerability in opencart/opencart. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

OpenCart Cross-site Scripting (XSS) in the Subject field of mail.

Also known asGHSA-87cv-57p8-j33x
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
2 known
Exploitation data as of Oct 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs77th percentile — riskier than 77% of all scored CVEsHighest risk
0.00%0.74%1.47%2.21%0.5%1.7%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘opencart/opencart

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

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 Packages

1 total
EcosystemPackageVulnerable rangeFix
🐘Packagistopencart/opencartall versionsNo fix

Affected Products

1 product · 1 configurations
Application
opencartopencart
1 version
3.0.3.6
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-49099webappsphp

OpenCart 3.0.3.6 - 'subject' Stored Cross-Site Scripting

by Hemant Patidar · Nov 24, 2020

Exploit-DB Source

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for opencart/opencart, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of opencart/opencart for CVE-2020-29470. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

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.
O3 Security · Impact-Aware SCA

Is CVE-2020-29470 in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works
CVE-2020-29470: opencart XSS (Medium 4.8)