EUVD-2026-76050
GHSA-vrxq-rm6h-6fq6
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/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
Attacker is unauthenticated (PR:N); victim interaction required for cross-origin POST (UI:R); redirect escapes AVideo origin creating scope change (S:C).
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
1DescriptionCVE.org
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains an open redirect in objects/playlistSort.php. Because the endpoint is not a *.json.php script, AVideo's automatic CSRF guard (autoCSRFGuard()/forbidIfIsUntrustedRequest()) does not run, and when the request includes the sort parameter the script issues a Location header set to the unvalidated $_SERVER['HTTP_REFERER'] value without calling isSafeRedirectURL(). A remote unauthenticated attacker can therefore induce a logged-in user who can manage the targeted playlist to submit a cross-origin POST with a crafted Referer, causing the victim's playlist to be reordered and the victim's browser to be redirected from a trusted AVideo URL to an attacker-controlled site for phishing. No patched version is available.
AnalysisAI
Open redirect combined with CSRF guard bypass in WWBN AVideo allows a remote unauthenticated attacker to redirect authenticated playlist managers to attacker-controlled phishing sites. The vulnerability resides in objects/playlistSort.php, which escapes AVideo's automatic CSRF protection because it lacks the .json.php filename suffix that triggers autoCSRFGuard()/forbidIfIsUntrustedRequest(), while simultaneously forwarding the unvalidated HTTP_REFERER header as a Location redirect without invoking AVideo's own isSafeRedirectURL() sanitizer. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must be actively authenticated to the AVideo instance AND must hold playlist management privileges - unauthenticated users and ordinary viewers cannot be exploited via this path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.1 (Medium) is a reasonable representation of constrained but real-world exploitable risk. … 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 | No vendor-released patch is identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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