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WWBN AVideo CVE-2026-85161

| EUVDEUVD-2026-70396 MEDIUM
Cross-Site Request Forgery (CSRF) (CWE-352)
2026-09-03 VulnCheck GHSA-rqjp-jjmp-m6hm
PHP CSRF 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:N/UI:P/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

Attacker needs no privileges; victim must load a crafted page (UI:R); impact is limited to deletion of own poster/thumbnail files (I:L), with no confidentiality or availability consequence.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/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
None
User Interaction
P
Scope
X

Lifecycle Timeline

1
Analysis Generated
Sep 03, 2026 - 12:03 vuln.today

DescriptionCVE.org

AVideo through commit c91b5975d contains a cross-site request forgery vulnerability in removePoster.php that lacks forbidIfNotPost or forbidIfInvalidToken checks. Attackers can craft malicious image tags to delete authenticated victims' live poster and thumbnail files via GET requests.

AnalysisAI

Cross-site request forgery in AVideo's removePoster.php endpoint allows network-accessible attackers to permanently delete an authenticated victim's live poster and thumbnail files by tricking them into loading a crafted page. The endpoint accepts state-changing file-deletion operations over HTTP GET while performing neither POST-method enforcement (forbidIfNotPost) nor CSRF token validation (forbidIfInvalidToken), making the attack trivially embeddable in an HTML image tag. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Exploit
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Vulnerability AssessmentAI

Exploitation The victim must be currently authenticated to the target AVideo instance (active session cookie present in browser) and must visit an attacker-controlled page or load attacker-controlled HTML content (e.g., embedded in an email or forum post). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 5.3 (Medium) with vector AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N correctly captures the limited blast radius: no confidentiality exposure, no availability impact, and integrity impact confined to the victim's own poster and thumbnail files. … 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 documented in GHSA-4h63-5723-hq25 (https://github.com/WWBN/AVideo/security/advisories/GHSA-4h63-5723-hq25), which adds forbidIfNotPost or forbidIfInvalidToken enforcement to removePoster.php. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-85161 vulnerability details – vuln.today
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