EUVD-2026-64263
GHSA-v8xr-qf65-qqxj
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/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 PHP endpoint exploitable by any low-privilege account; sole measurable impact is integrity via unauthorized video ownership reassignment, with no confidentiality or availability effect.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
2DescriptionCVE.org
WWBN AVideo through commit 9c39d8c8b4c1f75540788d6b391740852ceb0732 contains an authorization bypass vulnerability in the Users_affiliations add.json.php endpoint that allows authenticated users to forge two-party consent records by supplying the counterparty's agreement timestamp. Attackers can create a forged affiliation with status='a' and then reassign video ownership to arbitrary users through the videoAddNew.json.php endpoint, which trusts the forged affiliation as an authorization term.
AnalysisAI
Authorization bypass in WWBN AVideo through commit 9c39d8c8b4c1f75540788d6b391740852ceb0732 allows any authenticated user to forge two-party affiliation consent records and subsequently hijack video ownership of arbitrary content on the platform. The Users_affiliations add.json.php endpoint accepts attacker-controlled counterparty agreement timestamps without verification, enabling creation of forged affiliation records with approved status that are then unconditionally trusted by the videoAddNew.json.php ownership-transfer endpoint. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated session on the target AVideo instance - a low-privilege user account is sufficient, with no administrator or moderator role needed (CVSS PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N) yields a score of 7.1 and accurately characterizes the attack surface: the vulnerable endpoints are network-reachable, exploitation is low-complexity, and only a low-privilege authenticated account is required. … 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 | Upgrade to a version of WWBN AVideo that incorporates the fix referenced in GHSA-rg7g-cgjq-4wx8; review the advisory at https://github.com/WWBN/AVideo/security/advisories/GHSA-rg7g-cgjq-4wx8 for the specific remediated commit or tagged release, as no exact patch version is independently confirmed in the available intelligence. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify and audit all WWBN AVideo instances to determine if running commit 9c39d8c8b4c1f75540788d6b391740852ceb0732 or any version incorporating it; disable the Users_affiliations add.json.php and videoAddNew.json.php endpoints if not operationally critical. …
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External POC / Exploit Code
Leaving vuln.today