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CVE-2026-33043— AVideo affected by Session Hijacking via Unauthenticated Session ID Disclosure with Permissive CORS

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是WWBN团队的一个由PHP编写的视频平台建站系统。 WWBN AVideo 25.0及之前版本存在安全漏洞，该漏洞源于/objects/phpsessionid.json.php文件暴露PHP会话ID且跨域配置不当，可能导致跨域会话窃取和账户接管。

CVSS 8.1 · High EPSS 0.39% · P31
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I. Basic Information for CVE-2026-33043

Vulnerability Information
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Vulnerability Title
AVideo affected by Session Hijacking via Unauthenticated Session ID Disclosure with Permissive CORS
Source: CVE Program / CVE List V5
Vulnerability Description
WWBN AVideo is an open source video platform. In versions 25.0 and below, /objects/phpsessionid.json.php exposes the current PHP session ID to any unauthenticated request. The allowOrigin() function reflects any Origin header back in Access-Control-Allow-Origin with Access-Control-Allow-Credentials: true, enabling cross-origin session theft and full account takeover. This issue has been fixed in version 26.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过度许可的跨域白名单
Source: CVE Program / CVE List V5
Vulnerability Title
WWBN AVideo 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WWBN AVideo是WWBN团队的一个由PHP编写的视频平台建站系统。 WWBN AVideo 25.0及之前版本存在安全漏洞，该漏洞源于/objects/phpsessionid.json.php文件暴露PHP会话ID且跨域配置不当，可能导致跨域会话窃取和账户接管。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
WWBN AVideo < 26.0 -

II. Public POCs for CVE-2026-33043

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III. Intelligence Information for CVE-2026-33043

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Patches & Fixes for CVE-2026-33043 (1)

Vendor Advisories for CVE-2026-33043 (1)

Same Patch Batch · WWBN · 2026-03-20 · 10 CVEs total

CVE-2026-33039 8.6 HIGH AVideo vulnerable to unauthenticated SSRF via HTTP redirect bypass in LiveLinks proxy
CVE-2026-33038 8.1 HIGH AVideo affected by unauthenticated application takeover via exposed web installer on unini
CVE-2026-33037 8.1 HIGH WWBN AVideo has predictable default admin credentials in official Docker deployment path
CVE-2026-33237 5.5 MEDIUM AVideo has SSRF in Scheduler Plugin via callbackURL Missing `isSSRFSafeURL()` Validation
CVE-2026-33041 5.3 MEDIUM AVideo has an Unauthenticated Password Hash Oracle via encryptPass.json.php
CVE-2026-33238 4.3 MEDIUM AVideo has a Path Traversal in listFiles.json.php that Enables Server Filesystem Enumerati
CVE-2026-33025 AVideo-Encoder is Vulnerable to Authenticated SQL Injection via ORDER BY Clause
CVE-2026-33035 Unauthenticated Reflected XSS via innerHTML in AVideo
CVE-2026-33024 AVideo-Encoder has Unauthenticated Blind Server-Side Request Forgery via Public Thumbnail

IV. Related Vulnerabilities

Same product: AVideo
Same vendor: WWBN
Same weakness: CWE-942

V. Comments for CVE-2026-33043

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