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CVE-2026-84483— WWBN AVideo Unauthenticated Password Hash Oracle via encryptPass.json.php

Quick assessment

Affected
WWBN AVideo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WWBN AVideo 软件在提交版本 9c39d8c8 之前存在一个不完整的认证绕过漏洞，位于 文件中。该漏洞允许未认证的攻击者利用站点的公开 URL 和当前时间来计算有效的 HMAC 令牌。 攻击者可以使用站点的根 URL 作为密钥，通过计算 来伪造认证令牌。他们还可以提交任意密码以获取加密的哈希值，从而针对泄露的密码数据库进行离线预计算攻击。

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-84483

Vulnerability Information
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Vulnerability Title
WWBN AVideo Unauthenticated Password Hash Oracle via encryptPass.json.php
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的密码学密钥
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WWBN AVideo 0 ~ 9c39d8c8b4c1f75540788d6b391740852ceb0732 -

II. Public POCs for CVE-2026-84483

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-84483

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Other References for CVE-2026-84483 (2)

Same Patch Batch · WWBN · 2026-09-01 · 11 CVEs total

CVE-2026-84480 9.8 CRITICAL WWBN AVideo Password Recovery Token Expiration Bypass
CVE-2026-84479 9.1 CRITICAL WWBN AVideo Authentication Bypass via User-Agent Header
CVE-2026-84482 8.8 HIGH WWBN AVideo Cross-Site Request Forgery via get_domain() validation
CVE-2026-84187 8.2 HIGH AVideo on_publish.php Missing Authentication Check via RTMP Callback
CVE-2026-83595 8.1 HIGH AVideo Cross-Site Request Forgery via plugin/API/set.json.php
CVE-2026-84208 7.5 HIGH AVideo User_Location Plugin Unauthenticated SQL Injection
CVE-2026-84476 7.5 HIGH WWBN AVideo Authentication Bypass via X-Real-IP Header
CVE-2026-84478 7.3 HIGH WWBN AVideo Unauthenticated Arbitrary Log File Deletion
CVE-2026-84481 6.9 MEDIUM WWBN AVideo through 30.0 Information Disclosure via MobileManager
CVE-2026-84477 5.4 MEDIUM AVideo Stored XSS via Live Schedule Title Description

IV. Related Vulnerabilities

Same product: AVideo
Same vendor: WWBN
Same weakness: CWE-321

V. Comments for CVE-2026-84483

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