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CVE-2026-50873

Quick assessment

Affected
n/a n/a
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.

flatnotes是flatnotes的一款文件传输软件。 flatnotes 5.5.4版本存在安全漏洞，该漏洞源于附件处理组件存在任意文件上传问题，可能导致攻击者通过上传特制HTML或SVG文件执行任意代码。

AI Predicted 9.8 Difficulty: Easy EPSS 0.64% · P49

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a n/a n/a affected
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I. Basic Information for CVE-2026-50873

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An arbitrary file upload vulnerability in the attachment handling component of flatnotes v5.5.4 allows attackers to execute arbitrary code via uploading a crafted HTML or SVG file.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
flatnotes 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
flatnotes是flatnotes的一款文件传输软件。 flatnotes 5.5.4版本存在安全漏洞，该漏洞源于附件处理组件存在任意文件上传问题，可能导致攻击者通过上传特制HTML或SVG文件执行任意代码。
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
- n/a n/a -

II. Public POCs for CVE-2026-50873

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-50873

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Proof of Concept for CVE-2026-50873 (1)

Same Patch Batch · n/a · 2026-06-15 · 66 CVEs total

CVE-2026-12198 7.3 HIGH Microweber API Endpoint thumbnail_img userfiles_path path traversal
CVE-2026-12204 7.3 HIGH ShopXO Scheduled Task Endpoint Crontab.php GoodsGiveIntegral authorization
CVE-2025-55647 GPAC mp4box 数字错误漏洞
CVE-2026-50882 Anna paste 安全漏洞
CVE-2025-55648 GPAC mp4box 缓冲区错误漏洞
CVE-2026-30120 remotion-dev remotion 安全漏洞
CVE-2026-30121 remotion-dev remotion 安全漏洞
CVE-2026-50876 Deck9 Input 安全漏洞
CVE-2026-50870 Ben Busby Woogle Search 安全漏洞
CVE-2026-50874 kanishka-linux Reminiscence 安全漏洞
CVE-2026-50871 kanishka-linux Reminiscence 命令注入漏洞
CVE-2026-50889 LLDAP 拒绝服务漏洞
CVE-2026-50878 Feuerhamster MailForm 安全漏洞
CVE-2026-50880 YouTransfer 安全漏洞
CVE-2026-50877 Zhoros SuperBin 安全漏洞
CVE-2026-50872 fossar Selfoss 安全漏洞
CVE-2026-50869 Bludit 安全漏洞
CVE-2026-50890 grocy 安全漏洞
CVE-2026-50881 Bonsai 安全漏洞
CVE-2025-55652 GPAC mp4box 缓冲区错误漏洞

Showing top 20 of 66 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2026-50873

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