Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-110214— Snowy 3.6.5 Hard-coded Download Signature Key Allows Unauthenticated File Download

Quick assessment

Affected
xiaonuobase Snowy
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.

Snowy 3.6.5 存在一个硬编码 HMAC 密钥漏洞，攻击者可以利用已公开的 常量，对 接口伪造下载签名，从而实现未授权访问。攻击者可以离线计算猜测文件 ID 的 HMAC-SHA256 签名，进而下载存储在系统中的文件，例如头像、编辑器图片和附件等。

CVSS 3.7 · Low EPSS 0.46% · P38

Affected Version Matrix 1

VendorProduct Version RangeStatus
xiaonuobase Snowy 3.6.5≤ 3.6.5 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-110214

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Snowy 3.6.5 Hard-coded Download Signature Key Allows Unauthenticated File Download
Source: CVE Program / CVE List V5
Vulnerability Description
Snowy 3.6.5 contains a hard-coded HMAC key vulnerability that allows unauthenticated attackers to forge download signatures for the /dev/file/download endpoint by using the published FILE_DOWNLOAD_SIGN_SECRET constant. Attackers can compute HMAC-SHA256 signatures of guessed file ids offline to download stored files such as avatars, editor images and attachments.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的密码学密钥
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
xiaonuobase Snowy 3.6.5 ~ 3.6.5 -

II. Public POCs for CVE-2026-110214

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-110214

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-110214 (1)

Vendor Advisories for CVE-2026-110214 (1)

News Coverage for CVE-2026-110214 (1)

Other References for CVE-2026-110214 (1)

IV. Related Vulnerabilities

Same product: Snowy
Same weakness: CWE-321

V. Comments for CVE-2026-110214

No comments yet

Leave a comment