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TI-2026-26704 Aliases CVE-2026-34429GHSA-49mg-4v6p-32w2

Vvveb < 1.0.8.1 Stored XSS via Media Upload and Rename

Priority MEDIUM 56CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00281 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Vvveb (givanz): 1.0.8.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
givanzVvvebbefore 1.0.8.11.0.8.1Patch availableCNA
  • Vvveb Vendorgivanz Affected before 1.0.8.1 Fixed in 1.0.8.1 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:vvveb:vvveb:*:*:*:*:*:*:*:*——givanz
  • cpe:2.3:a:vvveb:vvveb:*:*:*:*:*:*:*:* Versions — — ·givanz

Remediation

  • Fix · CNA Vvveb (givanz) Fixed in 1.0.8.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    givanz Vvveb 1.0.8.1

    4 records Highest priority Priority MEDIUM 3 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-28787 Vvveb < 1.0.8.1 Code Injection via Installation EndpointPriority MEDIUM 49
    • TI-2026-26702 Vvveb < 1.0.8.1 Privilege Escalation via admin/user/savePriority MEDIUM 40
    • TI-2026-26703 Vvveb < 1.0.8.1 SSRF via oEmbedProxyPriority LOW 36
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34429
  2. 2026-10-03 Alias added: GHSA-49mg-4v6p-32w2

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • TI-2026-83112 Authentication bypass in Vvveb password reset enables account takeover CVSS 3.1CRITICAL 9.8
  • TI-2025-28570 An issue in vvveb CMS v.1.0.6 allows a remote attacker to execute arbitrary code via the Plugin mechanism. CVSS 3.1CRITICAL 9.8
  • TI-2024-18282 givanz VvvebJs 1.7.2 is vulnerable to Insecure File Upload. CVSS 3.1CRITICAL 9.8
  • TI-2024-16622 givanz VvvebJs 1.7.2 suffers from a File Upload vulnerability via save.php. CVSS 3.1CRITICAL 9.8
  • TI-2024-16621 A critical vulnerability has been identified in givanz VvvebJs 1.7.2, which allows both… CVSS 3.1CRITICAL 9.1
  • TI-2026-83115 Authenticated IDOR in Vvveb lets admins steal other admins' API tokens CVSS 3.1CRITICAL 9.0
See all 65 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences