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WWBN AVideo EUVDEUVD-2026-76863

| CVE-2026-90545 MEDIUM
Missing Authorization (CWE-862)
2026-09-12 VulnCheck GHSA-5m6r-x4rr-p7f2
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

Authenticated network attacker (PR:L, AV:N) achieves only low integrity impact by writing unauthorized comments; no confidentiality or availability impact is described.

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 commentAddNew.json.php endpoint, allowing authenticated users to post comments on password-protected and group-restricted videos. Attackers can submit POST requests with a valid session to add comments to videos they cannot watch, bypassing password and group access controls.

AnalysisAI

Missing authorization in WWBN AVideo's commentAddNew.json.php endpoint permits authenticated users to post comments on password-protected and group-restricted videos regardless of whether they can access the content. The flaw affects all releases through commit c3edcc274c389816d434acadac07ee78eaf330c1 of the self-hosted PHP video platform. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid authenticated user session on the target AVideo instance (PR:L confirmed by CVSS vector). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 5.3 (AV:N/AC:L/AT:N/PR:L/UI:N with VI:L only) accurately captures a bounded, low-severity integrity issue. … 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 Monitor the GitHub security advisory at https://github.com/WWBN/AVideo/security/advisories/GHSA-v3p2-4x76-7p8v for a tagged release that incorporates the authorization fix beyond commit c3edcc274c389816d434acadac07ee78eaf330c1 and upgrade when available. … Detailed patch versions, workarounds, and compensating controls in full report.
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EUVD-2026-76863 vulnerability details – vuln.today
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