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CVE-2026-43873— WWBN AVideo: Unauthenticated Disclosure of CloneSite `myKey` via Error Echo in `cloneClient.json.php` Enables Cross-Site DB Dump of the Configured Clone Server

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 29.0及之前版本存在安全漏洞，该漏洞源于plugin/CloneSite/cloneClient.json.php在未经验证的请求中回显本地CloneSite共享密钥，可能导致攻击者冒充受害者并触发远程数据库完整转储。

CVSS 7.5 · High EPSS 0.43% · P36

Affected Version Matrix 1

VendorProduct Version RangeStatus
WWBN AVideo <= 29.0 affected
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I. Basic Information for CVE-2026-43873

Vulnerability Information
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Vulnerability Title
WWBN AVideo: Unauthenticated Disclosure of CloneSite `myKey` via Error Echo in `cloneClient.json.php` Enables Cross-Site DB Dump of the Configured Clone Server
Source: CVE Program / CVE List V5
Vulnerability Description
WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/CloneSite/cloneClient.json.php echoes the local CloneSite shared secret ($objClone->myKey, a constant md5($global['systemRootPath'] . $global['salt'])) into the HTTP response body on every unauthenticated request. The unauthenticated error branch was intended to reject non-admin callers without a valid key, but the rejection message interpolates the expected key before die(). When the victim has CloneSite configured with a remote cloneSiteURL (standard federation/backup setup), the leaked myKey is exactly the credential that authenticates the victim to that remote server's cloneServer.json.php, allowing the attacker to impersonate the victim and trigger a full mysqldump of the remote's database to the remote's public videos/clones/ directory Commit e6566f56a28f4556b2a0a09d03717a719dcb49da contains an updated fix.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过错误消息导致的信息暴露
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 29.0及之前版本存在安全漏洞，该漏洞源于plugin/CloneSite/cloneClient.json.php在未经验证的请求中回显本地CloneSite共享密钥，可能导致攻击者冒充受害者并触发远程数据库完整转储。
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 <= 29.0 -

II. Public POCs for CVE-2026-43873

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III. Intelligence Information for CVE-2026-43873

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Patches & Fixes for CVE-2026-43873 (1)

Vendor Advisories for CVE-2026-43873 (1)

Same Patch Batch · WWBN · 2026-05-11 · 13 CVEs total

CVE-2026-43884 7.7 HIGH WWBN AVideo: SSRF Protection Bypass via HTTP Redirect and DNS Rebinding in isSSRFSafeURL()
CVE-2026-43874 7.2 HIGH WWBN AVideo: Incomplete Fix for YPTSocket autoEvalCodeOnHTML Strip: Unauthenticated Cross-
CVE-2026-43875 6.8 MEDIUM WWBN AVideo: Password Hash Leaked in MobileManager OAuth Redirect URL Enables Account Take
CVE-2026-43876 6.4 MEDIUM WWBN AVideo: HTML Injection in notifySubscribers.json.php Enables Platform-Branded Phishin
CVE-2026-43878 6.1 MEDIUM WWBN AVideo: Reflected XSS in plugin/Meet/iframe.php via Unescaped `user`/`pass` Parameter
CVE-2026-43879 5.4 MEDIUM WWBN AVideo: Blind SSRF in YPTWallet Donation Webhook via Missing isSSRFSafeURL() Check an
CVE-2026-43877 5.4 MEDIUM WWBN AVideo: CSRF in userSavePhoto.php Allows Cross-Origin Overwrite of Any Logged-in User
CVE-2026-43881 5.3 MEDIUM WWBN AVideo: Unauthenticated User Enumeration in `objects/users.json.php` via `isCompany`
CVE-2026-43880 5.3 MEDIUM WWBN AVideo: Unauthenticated Arbitrary Email Sending via sendEmail.json.php Allows Phishin
CVE-2026-43882 4.3 MEDIUM WWBN AVideo: Unauthenticated CRLF/ICS Injection in Scheduler downloadICS.php Allows Calend
CVE-2026-43883 4.2 MEDIUM WWBN AVideo: IDOR in PayPalYPT agreementCancel.json.php Allows Any Authenticated User to C
CVE-2026-43885 WWBN AVideo: Exposure of Sensitive Information to an Unauthorized Actor and Missing Author

IV. Related Vulnerabilities

Same product: AVideo
Same vendor: WWBN
Same weakness: CWE-209

V. Comments for CVE-2026-43873

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