EUVD-2026-64061
GHSA-p9jc-j6cx-2x36
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-accessible with no privileges required; victim must click a crafted link (UI:R); scope changes to victim browser with low confidentiality and integrity phishing impact.
Primary rating from Vendor (Joomla).
CVSS VectorVendor: Joomla
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
1DescriptionCVE.org
Joomla Extension - j2commerce.com - Open redirect in cart controller in J2Store 1.0.0-3.3.20, 4.0.0-4.0.20, 4.1.0-4.1.5 - Four task handlers accepted a base64-encoded URL from user input and redirected to it without validating the destination host, enabling phishing using the shop's trusted domain. No authentication required.
AnalysisAI
Open redirect in the J2Store Joomla e-commerce extension (versions 1.0.0-3.3.20, 4.0.0-4.0.20, and 4.1.0-4.1.5) enables unauthenticated remote attackers to craft phishing URLs that abuse the trusted domain of a legitimate shop. Four cart controller task handlers decode a base64-encoded URL from user-supplied input and redirect without validating the destination hostname, allowing attackers to route victims to arbitrary external sites while the URL appears to originate from the merchant's real domain. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No authentication is required - any unauthenticated remote user who can send HTTP requests to the publicly accessible J2Store cart controller can initiate the redirect. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:A) places this at 5.1, reflecting low-complexity unauthenticated network reachability constrained by required victim interaction, with no direct vulnerable-system impact (VC:N/VI:N/VA:N) and only low subsequent-system confidentiality and integrity effects (SC:L/SI:L/SA:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker identifies a J2Store-powered online shop running an affected version and constructs a cart controller URL embedding a base64-encoded pointer to an attacker-controlled phishing page. The attacker distributes this URL via email or social media, making it appear to originate from the legitimate merchant domain. … |
| Remediation | Upgrade J2Store to a version beyond the affected ranges: for the 3.x line, upgrade above 3.3.20; for the 4.0.x line, upgrade above 4.0.20; for the 4.1.x line, upgrade above 4.1.5. … Detailed patch versions, workarounds, and compensating controls in full report. |
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