# CVE-2026-84483 — WWBN AVideo

> As of 2026-09-01, CVE-2026-84483 is a MEDIUM-severity vulnerability in WWBN AVideo, CVSS v3.1 5.3, EPSS 0.2% (18.0th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-84483 as of 2026-09-01; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-01

## What is CVE-2026-84483?

WWBN AVideo through commit 9c39d8c8 contains an incomplete authentication bypass in encryptPass.json.php that allows unauthenticated attackers to compute valid HMAC tokens using the public site URL and current time. Attackers can forge authentication tokens by computing hash_hmac with the site's base URL as the key and submit arbitrary passwords to receive encrypted hashes, enabling offline precomputation attacks against stolen password databases.

The record classifies CVE-2026-84483 under weakness class [CWE-321](https://intel.threadlinqs.com/cwe/CWE-321). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction. 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:** 5.3 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **CVSS v4.0 base score:** 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 18.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-01

## Is CVE-2026-84483 being exploited?

It currently carries a trending score of 34 in the Threadlinqs vulnerability feed.

## Affected products and versions

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

## How to fix CVE-2026-84483

No vendor patch reference has been recorded for CVE-2026-84483 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-2026-84483

No threat campaign in the Threadlinqs corpus currently references CVE-2026-84483, 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, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-09-03. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — vendor advisory](https://github.com/WWBN/AVideo/security/advisories/GHSA-q92q-q2f7-v4fc)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/wwbn-avideo-unauthenticated-password-hash-oracle-via-encryptpass-json-php)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-84483
Full detection coverage and IOCs for threats exploiting CVE-2026-84483 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp