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CVE-2026-34429— Vvveb < 1.0.8.1 Stored XSS via Media Upload and Rename

Quick assessment

Affected
givanz Vvveb
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.

Vvveb是Givan个人开发者的一个强大且易于使用的CMS，用于构建网站、博客或电子商务商店。 Vvveb 1.0.8.1之前版本存在安全漏洞，该漏洞源于存储型跨站脚本漏洞，可能导致攻击者执行任意JavaScript代码。

CVSS 5.4 · Medium EPSS 0.28% · P21

Affected Version Matrix 2

VendorProduct Version RangeStatus
givanz Vvveb < 1.0.8.1 affected
cc997d3359ea5e49a45c132f5dee3bc80fb441d7 unaffected
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I. Basic Information for CVE-2026-34429

Vulnerability Information
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Vulnerability Title
Vvveb < 1.0.8.1 Stored XSS via Media Upload and Rename
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Vvveb 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vvveb是Givan个人开发者的一个强大且易于使用的CMS，用于构建网站、博客或电子商务商店。 Vvveb 1.0.8.1之前版本存在安全漏洞，该漏洞源于存储型跨站脚本漏洞，可能导致攻击者执行任意JavaScript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
givanz Vvveb 0 ~ 1.0.8.1 -

II. Public POCs for CVE-2026-34429

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III. Intelligence Information for CVE-2026-34429

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Patches & Fixes for CVE-2026-34429 (1)

Vendor Advisories for CVE-2026-34429 (1)

Proof of Concept for CVE-2026-34429 (1)

Vendor Pages for CVE-2026-34429 (1)

Same Patch Batch · givanz · 2026-04-20 · 4 CVEs total

CVE-2026-39918 9.8 CRITICAL Vvveb < 1.0.8.1 Code Injection via Installation Endpoint
CVE-2026-34427 8.8 HIGH Vvveb < 1.0.8.1 Privilege Escalation via admin/user/save
CVE-2026-34428 7.7 HIGH Vvveb < 1.0.8.1 SSRF via oEmbedProxy

IV. Related Vulnerabilities

Same product: Vvveb
Same vendor: givanz
Same weakness: CWE-79

V. Comments for CVE-2026-34429

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