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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- 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-renam
FAQ
What is CVE-2026-34429?
CVE-2026-34429 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 t...
How severe is CVE-2026-34429?
CVE-2026-34429 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34429?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.