EUVD-2026-81281
GHSA-rwxh-c5h7-gxqp
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
Network-reachable like endpoint (AV:N/AC:L), requires an authenticated account (PR:L), no user interaction; impact is limited low-integrity counter corruption with no confidentiality or availability effect and no scope change.
Primary rating from Vendor (vulncheck).
CVSS VectorVendor: vulncheck
Lifecycle Timeline
4DescriptionCVE.org
In AVideo through 29.0, Like::__construct() performs counter arithmetic on raw request values before validation, allowing array-typed parameters to desynchronize stored votes from counters. Authenticated attackers can send array-typed like parameters followed by ordinary requests to drive video like counts arbitrarily negative, with the corruption persisting in the denormalized counter until manual repair.
AnalysisAI
Authenticated AVideo users can drive video like counts arbitrarily negative by submitting the 'like' request parameter as an array rather than a scalar, exploiting counter arithmetic in Like::__construct() that executes before input validation; the resulting corruption is stored in a denormalized counter and persists until an administrator manually repairs it. Impact is confined to integrity of the engagement metric (no confidentiality, availability, code execution, or user interaction required), and no public exploit code or confirmed active exploitation is associated with this issue at time of analysis. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated AVideo account (PR:L) that can reach the like/vote endpoint - the default engagement feature. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a low-to-moderate integrity issue, not a security priority. … 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 data, so organizations should consult the GitHub advisory GHSA-hcfp-7hrc-5rvg (https://github.com/WWBN/AVideo/security/advisories/GHSA-hcfp-7hrc-5rvg) and the VulnCheck advisory (https://www.vulncheck.com/advisories/avideo-through-29.0-like-counter-desynchronization-via-array-parameter) for the fix, and upgrade to the first AVideo release after 29.0 that corrects the Like class to cast and validate request parameters as integers before any counter arithmetic. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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