Medium 5.4Published Apr 20, 2026

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

Updated under an hour ago (Oct 27, 2026, 2:20 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for givanz Vvveb

Exploited in the last 30 days

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: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jul 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

givanz Vvveb givanz:vvveb (from the name)	before 1.0.8.1; cc997d3359ea5e49a45c132f5dee3bc80fb441d7 not affected	CNA record

References

References

https://delta.cyberm.ca/bugbin/ur66bvB7BYTC9y0eCIk3uzhZQgbjzAkG/	technical-description, exploit
https://github.com/givanz/Vvveb/security/advisories/GHSA-2vc4-49hq-g7f4	vendor-advisory
https://github.com/givanz/Vvveb/releases/tag/1.0.8.1	release-notes
https://github.com/givanz/Vvveb/commit/cc997d3359ea5e49a45c132f5dee3bc80fb441d7	patch
https://www.vulncheck.com/advisories/vvveb-stored-xss-via-media-upload-and-rename	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.