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CVE-2026-44175— Kirby: Cross-site scripting (XSS) from list field content in the site frontend

Quick assessment

Affected
getkirby kirby
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.

Kirby Kirby是Kirby个人开发者的一款服务器与网络设备产品。 Kirby 4.9.1之前版本和5.4.1之前版本存在跨站脚本漏洞，该漏洞源于对列表字段内容保存时未进行安全清理，导致容易受到跨站脚本攻击。

AI Predicted 6.1 Difficulty: Moderate EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 2

VendorProduct Version RangeStatus
getkirby kirby < 4.9.1 affected
>= 5.0.0, < 5.4.1 affected
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I. Basic Information for CVE-2026-44175

Vulnerability Information
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Vulnerability Title
Kirby: Cross-site scripting (XSS) from list field content in the site frontend
Source: CVE Program / CVE List V5
Vulnerability Description
Kirby is an open-source content management system. In versions prior to 4.9.1 and 5.4.1, Kirby did not securely sanitize the contents of the list field on save, leaving it vulnerable to cross-site scripting (XSS). Kirby's list field stores its formatted content as HTML, and unlike other field types, its HTML special characters cannot be escaped without losing the formatting. Sanitization was only enforced client-side in the Panel, while the server did not sanitize the content on save. As a result, an attacker could bypass the Panel and send malicious HTML directly to Kirby's API, storing unsanitized markup in the content file. That markup would then be rendered on the site frontend and executed in the browsers of site visitors and logged-in users browsing the site, resulting in persistent XSS. This issue has been fixed in versions 4.9.1 and 5.4.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Kirby 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kirby Kirby是Kirby个人开发者的一款服务器与网络设备产品。 Kirby 4.9.1之前版本和5.4.1之前版本存在跨站脚本漏洞，该漏洞源于对列表字段内容保存时未进行安全清理，导致容易受到跨站脚本攻击。
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
getkirby kirby < 4.9.1 -

II. Public POCs for CVE-2026-44175

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III. Intelligence Information for CVE-2026-44175

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Vendor Advisories for CVE-2026-44175 (1)

Vendor Pages for CVE-2026-44175 (1)

Same Patch Batch · getkirby · 2026-07-16 · 6 CVEs total

CVE-2026-44177 Kirby: Pre-authentication path traversal and PHP file inclusion during user lookup
CVE-2026-44174 Kirby: Arbitrary Method Call via REST API search and collection query endpoints
CVE-2026-44176 Kirby: `pages.access` permission is not checked during rendering of page drafts
CVE-2026-45368 Kirby: Cross-site scripting (XSS) from links in KirbyTags and image blocks in the site fro
CVE-2026-45334 Kirby: Content locks disclose IDs and emails of inaccessible users from `users.access/list

IV. Related Vulnerabilities

Same product: kirby
Same vendor: getkirby
Same weakness: CWE-79

V. Comments for CVE-2026-44175

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