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CVE-2026-111646— SurveyKing before 1.13.0 Unauthenticated File Download via /api/public/preview

Quick assessment

Affected
javahuang SurveyKing
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.

SurveyKing 1.13.0 之前的版本存在一个缺少授权验证的漏洞。该漏洞允许未认证的攻击者通过 接口，利用附件 ID 下载任意已存储的文件。若攻击者知晓或能够推导出按时间顺序生成的 Snowflake 文件 ID，即可绕过 方法中对共享权限、所有者权限及项目权限的检查，从而读取私有的调查附件和受访者上传的文件。

CVSS 5.9 · Medium EPSS 0.39% · P31

Affected Version Matrix 1

VendorProduct Version RangeStatus
javahuang SurveyKing < 1.13.0 affected
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I. Basic Information for CVE-2026-111646

Vulnerability Information
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Vulnerability Title
SurveyKing before 1.13.0 Unauthenticated File Download via /api/public/preview
Source: CVE Program / CVE List V5
Vulnerability Description
SurveyKing before 1.13.0 contains a missing authorization vulnerability that allows unauthenticated attackers to download any stored file by id through GET /api/public/preview/{attachmentId}. Attackers who know or derive time-ordered snowflake file ids can bypass shared, owner, and project checks in FileServiceImpl.loadFile to read private survey attachments and respondent uploads.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
javahuang SurveyKing 0 ~ 1.13.0 -

II. Public POCs for CVE-2026-111646

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-111646

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Patches & Fixes for CVE-2026-111646 (1)

Vendor Advisories for CVE-2026-111646 (1)

Proof of Concept for CVE-2026-111646 (3)

Vendor Pages for CVE-2026-111646 (1)

IV. Related Vulnerabilities

Same weakness: CWE-862

V. Comments for CVE-2026-111646

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