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WWBN AVideo CVE-2026-84477

| EUVDEUVD-2026-69719 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-09-01 VulnCheck GHSA-cr48-hcxm-m4m4
PHP XSS Avideo Wwbn
5.1
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
5.1 MEDIUM
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
vuln.today AI
5.4 MEDIUM

Stored XSS requires low-privilege streaming account to write; scope changes to victim browser via unauthenticated remindMe.php; no availability impact.

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

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

1
Analysis Generated
Sep 01, 2026 - 22:48 vuln.today

DescriptionCVE.org

AVideo Live_schedule::setTitle() and setDescription() store POST input without sanitization, allowing users with streaming permission to inject malicious scripts. Unauthenticated attackers can access remindMe.php to execute stored XSS payloads in victim browsers without requiring authentication.

AnalysisAI

Stored cross-site scripting in WWBN AVideo's Live_schedule module allows a low-privileged attacker with streaming permission to persist unsanitized JavaScript via the setTitle() and setDescription() POST endpoints. The injected payload is served to any user - including unauthenticated visitors - who loads remindMe.php, giving the stored payload a wider execution surface than the injection privilege level implies. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Delivery
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Exploit
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Vulnerability AssessmentAI

Exploitation Injection of the XSS payload requires an account with streaming permission on the target AVideo instance (PR:L per CVSS 4.0). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 5.1 (Medium) with vector AV:N/AC:L/AT:N/PR:L/UI:P captures the real-world shape of this vulnerability well. … 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 Apply the fix described in the vendor security advisory at https://github.com/WWBN/AVideo/security/advisories/GHSA-625v-vrhq-g274 once a patched release is available - no exact fixed version has been confirmed from the available data, so monitor the AVideo GitHub repository for a tagged release that adds HTML encoding or output sanitization to setTitle() and setDescription(). … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-84477 vulnerability details – vuln.today
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