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WWBN AVideo CVE-2026-90546

| EUVDEUVD-2026-76864 MEDIUM
Missing Authorization (CWE-862)
2026-09-12 VulnCheck GHSA-7833-g5c9-2gx7
PHP Avideo Wwbn
5.3
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
5.3 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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
vuln.today AI
4.3 MEDIUM

Any authenticated low-privilege user can reach the endpoint over the network; impact is limited to like counter integrity with no confidentiality or availability effect.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

2
Metadata Corrected
Sep 12, 2026 - 13:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 12, 2026 - 13:11 vuln.today

DescriptionCVE.org

WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate video access permissions in the like.json.php endpoint, allowing logged-in users to record likes on password-protected and group-restricted videos. Attackers can submit like requests for videos they cannot watch to increment like counters and bypass access controls.

AnalysisAI

Missing authorization in AVideo's like.json.php endpoint allows any authenticated user to submit like interactions on password-protected or group-restricted videos they are not permitted to watch. The like counter for access-controlled content is incremented without the server verifying the requesting user's view permission, constituting a CWE-862 integrity bypass affecting all AVideo deployments through commit c3edcc274c389816d434acadac07ee78eaf330c1. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation Exploitation requires an active authenticated session with any registered user account on the AVideo instance (PR:L); unauthenticated access is not sufficient. … 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:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N) confirms network-reachable exploitation requiring only a low-privilege authenticated session, with no complexity or interaction conditions. … 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 Update AVideo to a commit newer than c3edcc274c389816d434acadac07ee78eaf330c1 per the guidance in GitHub security advisory GHSA-5jgf-mc35-5wg5 (https://github.com/WWBN/AVideo/security/advisories/GHSA-5jgf-mc35-5wg5). … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-90546 vulnerability details – vuln.today
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