EUVD-2026-81286
GHSA-2vmx-78wc-x2hc
Severity by source
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
Any authenticated account suffices (PR:L) over the network with low complexity; impact is limited to writing comments (I:L) with no data disclosure (C:N) or availability effect (A:N).
Primary rating from Vendor (vulncheck).
CVSS VectorVendor: vulncheck
Lifecycle Timeline
3DescriptionCVE.org
AVideo through 29.0 (commit c3edcc274c389816d434acadac07ee78eaf330c1) fails to verify video access permissions in the set_api_comment function, allowing authenticated users to post comments on password-protected and group-restricted videos. Attackers can submit POST requests to the comment API endpoint with arbitrary video IDs to write comments on videos they cannot watch.
AnalysisAI
Missing authorization in AVideo through 29.0 lets any authenticated user post comments to password-protected or group-restricted videos by submitting crafted POST requests to the comment API with arbitrary video IDs. The flaw lives in the set_api_comment function (CVE-2026-92586, CWE-862), which validates that a video exists but not that the requesting user is permitted to interact with it; exploitation requires only a standard registered account (CVSS 4.0 PR:L, no user interaction) and knowledge or enumeration of the target video's ID. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires a valid authenticated AVideo account (PR:L) - any registered low-privilege user suffices; no admin rights and no user interaction needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine-but-low-severity broken-authorization flaw, not a high-priority emergency. … 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 | No vendor-released patch version is identified in the available intelligence, so remediation must begin by tracking the upstream advisory at https://github.com/WWBN/AVideo/security/advisories/GHSA-fm4f-q895-8jhc and the VulnCheck advisory at https://www.vulncheck.com/advisories/avideo-through-29.0-missing-authorization-via-comment-api-endpoint for a fixed release or commit, and by upgrading the moment one is published. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
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External POC / Exploit Code
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