EUVD-2026-75415
GHSA-f786-7wmv-h56x
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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
PR:L for required canStream permission; S:C because the attacker's actions compromise other users' external streaming credentials and channels.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
5DescriptionCVE.org
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate restream ownership in getRestream.json.php, allowing authenticated users with canStream permission to mint tokens for arbitrary restreams. Attackers can exchange the token to retrieve other users' stream keys from getLiveKey.json.php and publish to their YouTube, Twitch, or RTMP destinations.
AnalysisAI
WWBN AVideo's restream subsystem allows any authenticated user holding canStream permission to mint authorization tokens for restream objects they do not own, by sending crafted requests to getRestream.json.php without ownership validation. Exchanging that token against getLiveKey.json.php exposes the victim's stored stream key for YouTube, Twitch, or arbitrary RTMP destinations - granting the attacker full publish access to another user's live streaming channel. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Attacker must hold a valid AVideo account with the `canStream` permission - a non-default, explicitly granted capability for streaming users. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.6 (AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N) accurately reflects network-accessible, low-complexity exploitation requiring only a `canStream`-level account. … 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 | Upgrade to a commit of WWBN AVideo that is more recent than c3edcc274c389816d434acadac07ee78eaf330c1, as this commit represents the last known-vulnerable state per EUVD-2026-75415. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Audit all users holding canStream permissions and examine logs for getRestream.json.php and getLiveKey.json.php endpoints to detect suspicious token requests. …
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