EUVD-2026-76861
GHSA-jhqv-wm6m-mvj2
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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
Network-reachable with no auth required (PR:N), stream-key prerequisite does not raise AC; integrity impact is low (message injection only), no confidentiality or availability impact.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
1DescriptionCVE.org
WWBN AVideo at commit c3edcc274c389816d434acadac07ee78eaf330c1 and earlier, with the Live plugin enabled, contains a missing authentication vulnerability in plugin/Live/socketMessageLiveOwner.json.php. The script reads the key and msg parameters from $_REQUEST, resolves the stream owner via LiveTransmition::keyExists, and verifies that the stream owner (not the caller) is an administrator; it performs no User::isLogged() check and enforces no CSRF token. As a result, an unauthenticated remote attacker who knows an administrator's Live stream key can call sendSocketSuccessMessageToUsers_id and deliver arbitrary in-app/socket notification messages to that administrator. The issue was unpatched at the time of publication.
AnalysisAI
Missing authentication in WWBN AVideo's Live plugin allows unauthenticated remote attackers to inject arbitrary socket notification messages to any administrator whose live stream key is known. The endpoint /plugin/Live/socketMessageLiveOwner.json.php validates that the stream *owner* holds admin privileges but performs no caller authentication (User::isLogged() is never invoked) and enforces no CSRF token, meaning the caller-identity check is entirely absent. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires three specific conditions: (1) the AVideo Live plugin must be enabled - the vulnerability exists only in `plugin/Live/socketMessageLiveOwner.json.php`, which is part of the optional Live plugin, not the AVideo core; (2) the attacker must know a valid live stream key belonging to an administrator account, since `LiveTransmition::keyExists` must resolve to an admin user for the message delivery to execute - exploitation against non-admin stream keys will not reach the vulnerable code path; (3) the AVideo instance must be network-accessible to the attacker. … 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:N scores 6.9, reflecting network-accessible, zero-privilege exploitation with only low integrity impact (VI:L). … 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 has been 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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