EUVD-2026-71000
GHSA-6r7w-x557-3659
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/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
Reflected XSS requires victim to follow crafted URL (UI:R), scope changes to browser context (S:C), with limited confidentiality/integrity impact and no availability impact.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
1DescriptionCVE.org
AVideo through commit c91b5975d contains a reflected cross-site scripting vulnerability in userLogin.php that allows unauthenticated attackers to inject arbitrary JavaScript by closing the script tag with </script>. Attackers can craft a malicious URL with an error parameter containing script breakout sequences to execute arbitrary JavaScript in the victim's browser context on the login page.
AnalysisAI
Reflected cross-site scripting in AVideo's userLogin.php allows unauthenticated attackers to inject and execute arbitrary JavaScript in a victim's browser by crafting a malicious URL with a script-breakout payload in the error parameter. The attack targets any user who follows the crafted link to the AVideo login page, enabling session hijacking, credential phishing overlays, or browser-based actions on behalf of the victim. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must deliver a crafted URL containing the malicious error parameter payload to a victim who then visits it in a browser with an active or future AVideo session - victim user interaction is required (UI:P in CVSS 4.0). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.3 (Medium) reflects the attack's network reachability and zero-privilege requirement, tempered by mandatory user interaction (UI:P) and limited VC:L/VI:L impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary fix is to upgrade AVideo to any commit after c91b5975d that addresses output encoding in userLogin.php; consult the vendor advisory at https://github.com/WWBN/AVideo/security/advisories/GHSA-v654-6qw8-pc33 for the exact patched release tag, as no specific version number was confirmed in the available data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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