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CVE-2026-110101— Koillection through 1.8.4 Stored XSS via Datum File Attachment Uploads

Quick assessment

Affected
benjaminjonard Koillection
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.

Koillection 1.8.4 及更低版本中存在一个存储型跨站脚本（XSS）漏洞。该漏洞允许已认证的用户上传缺乏 MIME 类型限制的 HTML 文件，并将其作为数据（Datum）文件的附件。攻击者可通过 POST /api/data/{id}/file 接口上传包含恶意代码的 HTML 文件，这些文件将从公共上传目录（public/uploads）以 text/html 类型提供服务，从而在受害者的会话中执行 JavaScript 代码，并冒充受害者执行相关操作。

CVSS 5.4 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
benjaminjonard Koillection ≤ 1.8.4 affected
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I. Basic Information for CVE-2026-110101

Vulnerability Information
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Vulnerability Title
Koillection through 1.8.4 Stored XSS via Datum File Attachment Uploads
Source: CVE Program / CVE List V5
Vulnerability Description
Koillection through 1.8.4 contains a stored cross-site scripting vulnerability that allows authenticated users to upload HTML files as Datum file attachments lacking MIME restrictions. Attackers can upload HTML payloads via POST /api/data/{id}/file, served as text/html from public/uploads, executing JavaScript in victims' sessions to perform actions on their behalf.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A: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

Affected Products

Vendor Product Affected Versions CPE Subscribe
benjaminjonard Koillection 0 ~ 1.8.4 -

II. Public POCs for CVE-2026-110101

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III. Intelligence Information for CVE-2026-110101

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Patches & Fixes for CVE-2026-110101 (2)

Vendor Advisories for CVE-2026-110101 (1)

Proof of Concept for CVE-2026-110101 (1)

IV. Related Vulnerabilities

Same product: Koillection
Same weakness: CWE-79

V. Comments for CVE-2026-110101

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