CVE-2026-6249 | THREATINT

Description

Vvveb CMS 1.0.8 contains a remote code execution vulnerability in its media upload handler that allows authenticated attackers to execute arbitrary operating system commands by uploading a PHP webshell with a .phtml extension. Attackers can bypass the extension deny-list and upload malicious files to the publicly accessible media directory, then request the file over HTTP to achieve full server compromise.

PUBLISHED Reserved 2026-04-13 | Published 2026-04-20 | Updated 2026-04-20 | Assigner VulnCheck

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-434 Unrestricted Upload of File with Dangerous Type

Product status

Default status
affected

1.0.8 (semver)
affected

Credits

Mohammed EL OUARDANI finder

References

github.com/…ommit/23ac0e8c758d80f3c4d9224763c8b2359648270e (Patch Commit) patch

www.vulncheck.com/…-remote-code-execution-via-media-upload third-party-advisory

cve.org (CVE-2026-6249)

nvd.nist.gov (CVE-2026-6249)

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