# CVE-2026-84477 — WWBN AVideo

> As of 2026-09-02, CVE-2026-84477 is a MEDIUM-severity vulnerability in WWBN AVideo, CVSS v3.1 5.4, EPSS 0.1% (6.4th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-84477 as of 2026-09-02; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-02

## What is CVE-2026-84477?

AVideo Live_schedule::setTitle() and setDescription() store POST input without sanitization, allowing users with streaming permission to inject malicious scripts. Unauthenticated attackers can access remindMe.php to execute stored XSS payloads in victim browsers without requiring authentication.

The record classifies CVE-2026-84477 under weakness class [CWE-79](https://intel.threadlinqs.com/cwe/CWE-79). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs a user to take an action first. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 34 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 5.4 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **CVSS v4.0 base score:** 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 6.4% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-01, last modified 2026-09-02

## Is CVE-2026-84477 being exploited?

It currently carries a trending score of 31 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [WWBN](https://intel.threadlinqs.com/vendors/wwbn): AVideo

## How to fix CVE-2026-84477

No vendor patch reference has been recorded for CVE-2026-84477 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-84477

No threat campaign in the Threadlinqs corpus currently references CVE-2026-84477, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, GitHub Security Advisories, FIRST EPSS. Last verified by Threadlinqs on 2026-09-03.

**Vendor advisory and patch**

- [github.com — vendor advisory](https://github.com/WWBN/AVideo/security/advisories/GHSA-625v-vrhq-g274)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/avideo-stored-xss-via-live-schedule-title-description)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-84477
Full detection coverage and IOCs for threats exploiting CVE-2026-84477 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp