EUVD-2026-76068
GHSA-h362-pv2x-28jm
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/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
Authenticated video owner (PR:L) plants payload that fires only when a victim views the page (UI:R); XSS crosses into other users' sessions (S:C) with browser-context Low confidentiality/integrity impact and no availability effect.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the Bookmark plugin where chapter names are not encoded before being concatenated into public watch-page HTML. A video owner can inject malicious scripts via the bookmark name parameter, and every visitor of that video executes the payload in the AVideo origin.
AnalysisAI
Stored cross-site scripting in the WWBN AVideo Bookmark plugin lets a video owner persist a JavaScript payload through the bookmark/chapter name parameter, which is concatenated into public watch-page HTML without output encoding (CWE-79). Every viewer of the affected video then executes attacker-controlled script in the AVideo origin, enabling session/account compromise of ordinary users and administrators. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated low-privilege account that can own/upload a video and create a bookmark (PR:L), the target instance must have the Bookmark plugin enabled, and a victim must load the affected video's public watch page (UI:P) for the payload to fire. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 9.3 (AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/SC:H/SI:H) is high, but it appears inflated for a stored XSS: it rates both confidentiality and integrity as High on the vulnerable and subsequent systems, whereas the realistic impact is theft of session tokens/CSRF-able actions in the browser context (typically Low-to-High depending on what an admin session exposes), not direct high-integrity compromise of the server. … 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 an AVideo build that includes the fix committed after c3edcc274c389816d434acadac07ee78eaf330c1 as described in the GitHub Security Advisory GHSA-jggq-mm5m-r5wv (no tagged patched release version was supplied in the input, so pull the latest master/main and confirm the Bookmark rendering applies HTML entity encoding). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all AVideo deployments running the Bookmark plugin and determine which videos have had bookmarks or chapters created in recent weeks-these represent active attack surface. …
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An issue in WWBN AVideo v.12.4 through v.14.2 allows a remote attacker to execute arbitrary code via the systemRootPath
A directory traversal vulnerability exists in the unzipDirectory functionality of WWBN AVideo 11.6 and dev master commit
An insufficient entropy vulnerability exists in the salt generation functionality of WWBN AVideo dev master commit 15fed
Unauthenticated SQL injection in AVideo before 24.0.
OS injection vulnerability in World Wide Broadcast Network AVideo version before 12.4, allows attackers to execute arbit
A reflected cross-site scripting (xss) vulnerability exists in the charts tab selection functionality of WWBN AVideo 11.
A cross-site scripting (xss) vulnerability exists in the channelBody.php user name functionality of WWBN AVideo 11.6 and
A cross-site scripting (xss) vulnerability exists in the videoAddNew functionality of WWBN AVideo 11.6 and dev master co
An insufficient entropy vulnerability exists in the userRecoverPass.php recoverPass generation functionality of WWBN AVi
WWBN AVideo is an open source video platform. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable
AVideo is an open source video platform. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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