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Global vulnerability → Multiple sectors CRITICAL 22m Global vulnerability → Information Technology / Software Infrastructure CRITICAL 24m Global data_breach → Healthcare CRITICAL 39m Global data_breach → Mobile Technology / Consumer Electronics HIGH 1h Global ransomware → Cybersecurity Services / Multiple Sectors CRITICAL 1h Global apt → Cryptocurrency and Blockchain CRITICAL 1h Global malware → Financial Services, Mobile Payments HIGH 2h Global vulnerability → Government and Critical Infrastructure CRITICAL 5h Global apt → Cryptocurrency and Blockchain CRITICAL 13h Global malware → Financial Services / Cryptocurrency CRITICAL 13h Global vulnerability → Multiple sectors CRITICAL 22m Global vulnerability → Information Technology / Software Infrastructure CRITICAL 24m Global data_breach → Healthcare CRITICAL 39m Global data_breach → Mobile Technology / Consumer Electronics HIGH 1h Global ransomware → Cybersecurity Services / Multiple Sectors CRITICAL 1h Global apt → Cryptocurrency and Blockchain CRITICAL 1h Global malware → Financial Services, Mobile Payments HIGH 2h Global vulnerability → Government and Critical Infrastructure CRITICAL 5h Global apt → Cryptocurrency and Blockchain CRITICAL 13h Global malware → Financial Services / Cryptocurrency CRITICAL 13h Global vulnerability → Multiple sectors CRITICAL 22m Global vulnerability → Information Technology / Software Infrastructure CRITICAL 24m Global data_breach → Healthcare CRITICAL 39m Global data_breach → Mobile Technology / Consumer Electronics HIGH 1h Global ransomware → Cybersecurity Services / Multiple Sectors CRITICAL 1h Global apt → Cryptocurrency and Blockchain CRITICAL 1h Global malware → Financial Services, Mobile Payments HIGH 2h Global vulnerability → Government and Critical Infrastructure CRITICAL 5h Global apt → Cryptocurrency and Blockchain CRITICAL 13h Global malware → Financial Services / Cryptocurrency CRITICAL 13h

Vulnerabilities ›

CVE-2026-34429

Medium

CWE-79 — Weakness Type

                    Published: Apr 20, 2026                      ·  Modified: Apr 21, 2026                      ·  Source: NVD                

CVSS v3

5.4

🔗 NVD Official

📄 Description (English)

Vvveb prior to 1.0.8.1 contains a stored cross-site scripting vulnerability that allows authenticated users with media upload and rename permissions to execute arbitrary JavaScript by bypassing MIME type validation and renaming uploaded files to executable extensions. Attackers can prepend a GIF89a header to HTML/JavaScript payloads to bypass upload validation, rename the file to .html extension, and execute malicious scripts in an administrator's browser session to create backdoor accounts and upload malicious plugins for remote code execution.

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Queued for AI Analysis

This CVE will be auto-analyzed on the next cron run.

🔗 References & Sources 4

https://delta.cyberm.ca/bugbin/ur66bvB7BYTC9y0eCIk3uzhZQgbjzAkG/

disclosure@vulncheck.com

https://github.com/givanz/Vvveb/commit/cc997d3359ea5e49a45c132f5dee3bc80fb441d7

disclosure@vulncheck.com

https://github.com/givanz/Vvveb/releases/tag/1.0.8.1

disclosure@vulncheck.com

https://www.vulncheck.com/advisories/vvveb-stored-xss-via-media-upload-and-rename

disclosure@vulncheck.com

📊 CVSS Score

5.4

/ 10.0 — Medium

📊 CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack VectorN — None / Network

Attack ComplexityL — Low / Local

Privileges RequiredL — Low / Local

User InteractionR — Required

ScopeC — Changed

ConfidentialityL — Low / Local

IntegrityL — Low / Local

AvailabilityN — None / Network

📋 Quick Facts

Severity Medium

CVSS Score5.4

CWECWE-79

Exploit No

Patch ✗ No

Published 2026-04-20

Source Feed nvd

🏷️ Tags

CWE-79

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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