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CVE-2026-104459— YesWiki before 4.6.7 SSRF via ActivityPub WebFinger actor_handle

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.

YesWiki 4.6.7 之前的版本在 WebfingerService 中存在服务器端请求伪造（SSRF）漏洞，允许未认证的攻击者触发对内部主机的 HTTPS 请求。攻击者可以通过向 abonnements 视图 POST 构造的 actor_handle 参数（包含数字格式的 host 和 port），探测内部 HTTPS 服务和端口。

CVSS 6.5 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
YesWiki yeswiki < 4.6.7 affected
4.6.7 unaffected
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I. Basic Information for CVE-2026-104459

Vulnerability Information
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Vulnerability Title
YesWiki before 4.6.7 SSRF via ActivityPub WebFinger actor_handle
Source: CVE Program / CVE List V5
Vulnerability Description
YesWiki before 4.6.7 contains a server-side request forgery vulnerability in WebfingerService that allows unauthenticated attackers to trigger HTTPS requests to internal hosts. Attackers can POST a crafted actor_handle with a numeric host and port to the abonnements view to probe internal HTTPS services and ports.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
YesWiki yeswiki 0 ~ 4.6.7 -

II. Public POCs for CVE-2026-104459

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III. Intelligence Information for CVE-2026-104459

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Vendor Advisories for CVE-2026-104459 (2)

Same Patch Batch · YesWiki · 2026-10-02 · 36 CVEs total

CVE-2026-104457 8.6 HIGH YesWiki before 4.6.7 SQL Injection via filtertags filterN parameter
CVE-2026-104464 8.6 HIGH YesWiki before 4.6.7 SSRF via Bazar abonnements sync actor parameter
CVE-2026-104445 8.2 HIGH YesWiki before 4.6.7 Authentication Bypass via ActivityPub Inbox Actor Spoofing
CVE-2026-104448 8.1 HIGH YesWiki before 4.6.7 CSRF Page Deletion via ajaxdeletepage Handler
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-2026-104456 7.6 HIGH YesWiki before 4.6.7 Second-Order SQL Injection via ACL Username
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-2026-104460 7.5 HIGH YesWiki before 4.6.7 Unauthenticated Blind SQL Injection via newtextsearch
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-2026-104444 7.1 HIGH YesWiki before 4.6.7 Authorization Bypass via Comments API editComment
CVE-2026-104447 7.1 HIGH YesWiki before 4.6.7 CSRF Package Deletion via autoupdate UpdateAction
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-2026-104450 6.5 MEDIUM YesWiki before 4.6.7 ACL Bypass and Stored XSS via pointimage Action
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-2026-104446 6.5 MEDIUM YesWiki before 4.6.7 Unauthenticated Open Mail Relay via Contact Mail Handler

Showing top 20 of 36 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: yeswiki
Same vendor: YesWiki
Same weakness: CWE-918

V. Comments for CVE-2026-104459

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