SEPTEMBER 17, 2026
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Case File

CVE-2026-82191

MEDIUM · CVSS 5.3 EPSS 0.26%

Source: NVD + CISA KEV + EPSS · Published 2026-09-15 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The J2Store extension for Joomla is vulnerable to parameter injection due to unescaped request data being reflected in the PayPal notify redirect. This flaw allows an attacker to manipulate query parameters in the redirect, potentially leading to unauthorized actions or data exposure if a victim interacts with a crafted link. Joomla site administrators using affected versions (1.0.0-3.3.2, 4.0.0-4.0.22, 4.1.0-4.1.7) should prioritize patching this vulnerability to mitigate risks associated with user interaction.

CVE
CVE-2026-82191
Severity
MEDIUM
CVSS
5.3
EPSS
0.26%

Original NVD Description

Joomla Extension - j2commerce.com - Unescaped request data reflected into PayPal notify redirect in J2Store 1.0.0-3.3.2, 4.0.0-4.0.22, 4.1.0-4.1.7 - A crafted link to the paypal notify endpoint, if followed by a victim's browser (or an automated system that fetches it), causes the resulting redirect to `com_j2store`'s checkout controller to carry attacker-chosen query parameters instead of only the intended `view=checkout&task=confirmPayment&orderpayment_type=...&paction=process` set — parameter injection/smuggling into that follow-up request. This requires a victim to load the crafted link (`UI:R`/`UI:P`); it does not by itself grant an unauthenticated attacker anything they could not already obtain by requesting the target `com_j2store` URL directly with their own parameters.