CVE-2026-41938

Summary

Vvveb before version 1.0.8.2 contains an unrestricted file upload vulnerability in the media upload handler that allows authenticated users with media-upload permissions to bypass extension restrictions by uploading a .htaccess file to map .phtml extensions to the PHP handler. Attackers can upload a .phtml file containing arbitrary PHP code and execute the uploaded payload through a subsequent unauthenticated HTTP GET request to the uploaded file, resulting in remote code execution with web server privileges.

Affected Software

Weaknesses

• CWE-434: Unrestricted Upload of File with Dangerous Type

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: total

Additional References

• https://github.com/givanz/Vvveb/security/advisories/GHSA-wwmv-4g9g-p48g

References

• https://github.com/givanz/Vvveb/releases/tag/1.0.8.2
• https://github.com/givanz/Vvveb/security/advisories/GHSA-wwmv-4g9g-p48g
• https://github.com/givanz/Vvveb/commit/54a9e846fb94192f1b31ae81d81d25c874662e6a
• https://www.vulncheck.com/advisories/vvveb-rce-via-media-upload-handler

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