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CVE-2026-86721— AVideo through c3edcc274c Authorization Bypass via Session Cookie

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.

通过提交 c3edcc274c 的 AVideo 版本存在一个授权绕过漏洞：一个名为 'key'、值为 'value' 的会话 Cookie 会覆盖 及相关接口中的 参数。攻击者可以利用已知的固定流密钥值，在无认证的情况下向任意用户的 RTMP 流进行推流，从而劫持直播广播。

CVSS 7.5 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
WWBN AVideo ≤ c3edcc274c389816d434acadac07ee78eaf330c1 affected
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I. Basic Information for CVE-2026-86721

Vulnerability Information
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Vulnerability Title
AVideo through c3edcc274c Authorization Bypass via Session Cookie
Source: CVE Program / CVE List V5
Vulnerability Description
AVideo through commit c3edcc274c contains an authorization bypass vulnerability where a session cookie named 'key' with value 'value' overrides the $_REQUEST['key'] parameter in saveLive.php and related endpoints. Attackers can publish to any user's RTMP stream without authentication by using the known constant stream key value to hijack live broadcasts.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WWBN AVideo 0 ~ c3edcc274c389816d434acadac07ee78eaf330c1 -

II. Public POCs for CVE-2026-86721

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-86721

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Vendor Advisories for CVE-2026-86721 (2)

Same Patch Batch · WWBN · 2026-09-08 · 12 CVEs total

CVE-2026-86723 8.1 HIGH AVideo LoginControl PGP Authentication Bypass via verifyChallenge
CVE-2026-86720 8.1 HIGH WWBN AVideo Missing Authorization via resendRestreamer.json.php
CVE-2026-86722 8.1 HIGH AVideo Authentication Bypass via SQL Cache Invalidation
CVE-2026-86728 7.5 HIGH AVideo through 29.0 Unauthenticated Disclosure via epg.json.php
CVE-2026-86727 7.5 HIGH AVideo through 29.0 Information Disclosure via stats.json.php
CVE-2026-86729 7.4 HIGH WWBN AVideo Unrestricted Authentication Attempts via get_api_preauthorize
CVE-2026-86718 7.1 HIGH WWBN AVideo Cross-Site Request Forgery via deleteHistory.json.php
CVE-2026-86725 7.1 HIGH AVideo SocialMediaPublisher Missing Authorization via add.json.php
CVE-2026-86726 6.5 MEDIUM AVideo through 29.0 Information Disclosure via restreamsActive.json.php
CVE-2026-86724 6.5 MEDIUM AVideo YPTWallet saveBalance.php Cross-Site Request Forgery
CVE-2026-86719 5.4 MEDIUM WWBN AVideo CustomizeUser Cross-Site Request Forgery Session Hijacking

IV. Related Vulnerabilities

Same product: AVideo
Same vendor: WWBN
Same weakness: CWE-287

V. Comments for CVE-2026-86721

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