CVE-2026-34429

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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://delta.cyberm.ca/bugbin/ur66bvB7BYTC9y0eCIk3uzhZQgbjzAkG/
https://github.com/givanz/Vvveb/commit/cc997d3359ea5e49a45c132f5dee3bc80fb441d7
https://github.com/givanz/Vvveb/releases/tag/1.0.8.1
https://github.com/givanz/Vvveb/security/advisories/GHSA-2vc4-49hq-g7f4
https://www.vulncheck.com/advisories/vvveb-stored-xss-via-media-upload-and-rename

Configurations

No configuration.

History

07 May 2026, 21:16

Type	Values Removed	Values Added
References		() https://github.com/givanz/Vvveb/security/advisories/GHSA-2vc4-49hq-g7f4 -

20 Apr 2026, 16:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-20 16:16

Updated : 2026-07-14 19:17

NVD link : CVE-2026-34429

Mitre link : CVE-2026-34429

CVE.ORG link : CVE-2026-34429

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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