CVE-2026-104446— YesWiki before 4.6.7 Unauthenticated Open Mail Relay via Contact Mail Handler
Quick assessment
Affected
YesWiki yeswiki
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.
在 YesWiki 4.6.7 之前的版本中，联系邮件 AJAX 处理程序存在认证绕过漏洞，该漏洞允许未经身份验证的攻击者通过 Wiki 的 SMTP 服务器发送电子邮件。攻击者可以向邮件处理程序 POST XMLHttpRequest，而无需提供字段或类型参数，并可以随意指定收件人、发件人、主题和内容，从而用于发送垃圾邮件或钓鱼邮件。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-104446
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
YesWiki before 4.6.7 Unauthenticated Open Mail Relay via Contact Mail Handler
Source: CVE Program / CVE List V5
Vulnerability Description
YesWiki before 4.6.7 contains an authentication bypass in the contact mail AJAX handler that allows unauthenticated attackers to send email through the wiki's SMTP server. Attackers can POST an XMLHttpRequest to the mail handler without field or type parameters, supplying arbitrary recipient, sender, subject and body for spam and phishing.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-104446
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2026-104446 (2)
Same Patch Batch · YesWiki · 2026-10-02 · 36 CVEs total
| CVE-2026-104464 | 8.6 HIGH | YesWiki before 4.6.7 SSRF via Bazar abonnements sync actor parameter |
| CVE-2026-104457 | 8.6 HIGH | YesWiki before 4.6.7 SQL Injection via filtertags filterN parameter |
| CVE-2026-104445 | 8.2 HIGH | YesWiki before 4.6.7 Authentication Bypass via ActivityPub Inbox Actor Spoofing |
| CVE-2026-104467 | 8.1 HIGH | YesWiki before 4.6.7 Authorization Bypass via Public API Mode |
| CVE-2026-104443 | 8.1 HIGH | YesWiki before 4.6.7 Scope Bypass via Triples Delete API |
| CVE-2026-104448 | 8.1 HIGH | YesWiki before 4.6.7 CSRF Page Deletion via ajaxdeletepage Handler |
| CVE-2026-104456 | 7.6 HIGH | YesWiki before 4.6.7 Second-Order SQL Injection via ACL Username |
| CVE-2026-104460 | 7.5 HIGH | YesWiki before 4.6.7 Unauthenticated Blind SQL Injection via newtextsearch |
| CVE-2026-104462 | 7.5 HIGH | YesWiki before 4.6.7 SQL Injection via nuagetag tags parameter |
| CVE-2026-104472 | 7.5 HIGH | YesWiki before 4.6.7 Missing Authorization via Attachment Download Handler |
| CVE-2026-104470 | 7.4 HIGH | YesWiki before 4.6.7 SSRF and XSS via Bazar valeur Action |
| CVE-2026-104471 | 7.2 HIGH | YesWiki before 4.6.7 Unrestricted File Upload via Bazar CSV Import |
| CVE-2026-104447 | 7.1 HIGH | YesWiki before 4.6.7 CSRF Package Deletion via autoupdate UpdateAction |
| CVE-2026-104444 | 7.1 HIGH | YesWiki before 4.6.7 Authorization Bypass via Comments API editComment |
| CVE-2026-104463 | 7.0 HIGH | YesWiki before 4.6.7 Unauthenticated SSRF via ActivityPub Inbox |
| CVE-2026-104469 | 6.8 MEDIUM | YesWiki before 4.6.7 Session Fixation via Login in AuthController.php |
| CVE-2026-104459 | 6.5 MEDIUM | YesWiki before 4.6.7 SSRF via ActivityPub WebFinger actor_handle |
| CVE-2026-104458 | 6.5 MEDIUM | YesWiki before 4.6.7 SSRF Guard Bypass via IPv6 Transition Addresses |
| CVE-2026-104449 | 6.5 MEDIUM | YesWiki before 4.6.7 Unauthenticated Page Overwrite via Bazar id_fiche |
| CVE-2026-104450 | 6.5 MEDIUM | YesWiki before 4.6.7 ACL Bypass and Stored XSS via pointimage Action |
Showing top 20 of 36 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: yeswiki
-
CVE-2026-104473
YesWiki before 4.5.3 Multiple Reflected XSS via BazaR and li -
CVE-2026-104472
YesWiki before 4.6.7 Missing Authorization via Attachment Do -
CVE-2026-104471
YesWiki before 4.6.7 Unrestricted File Upload via Bazar CSV -
CVE-2026-104469
YesWiki before 4.6.7 Session Fixation via Login in AuthContr -
CVE-2026-104470
YesWiki before 4.6.7 SSRF and XSS via Bazar valeur Action
Same vendor: YesWiki
-
CVE-2026-104473
YesWiki before 4.5.3 Multiple Reflected XSS via BazaR and li -
CVE-2026-104472
YesWiki before 4.6.7 Missing Authorization via Attachment Do -
CVE-2026-104471
YesWiki before 4.6.7 Unrestricted File Upload via Bazar CSV -
CVE-2026-104469
YesWiki before 4.6.7 Session Fixation via Login in AuthContr -
CVE-2026-104470
YesWiki before 4.6.7 SSRF and XSS via Bazar valeur Action
Same weakness: CWE-306
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UTMStack < 11.2.16 Authentication Bypass via InternalApiKeyF -
CVE-2026-103956
Missing authentication for critical function in Loom for AWS -
CVE-2026-103765
Mooncake through 0.3.13.post1 Missing Authentication in HTTP
V. Comments for CVE-2026-104446
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