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Description

An unauthenticated arbitrary file upload vulnerability exists in FlashChat versions 6.0.2 and 6.0.4 through 6.0.8. The upload.php endpoint fails to properly validate file types and authentication, allowing attackers to upload malicious PHP scripts. Once uploaded, these scripts can be executed remotely, resulting in arbitrary code execution as the web server user.

PUBLISHED Reserved 2025-07-30 | Published 2025-07-31 | Updated 2026-04-07 | Assigner VulnCheck




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-434 Unrestricted Upload of File with Dangerous Type

Product status

Default status
unaffected

6.0.2
affected

6.0.4 (semver)
affected

Credits

x-hayben21 finder

References

raw.githubusercontent.com/...webapp/flashchat_upload_exec.rb exploit

www.exploit-db.com/exploits/28709 exploit

www.fortiguard.com/.../37342/flashchat-arbitrary-file-upload third-party-advisory

www.phpbb.com/community/viewtopic.php?t=2627786

www.vulncheck.com/...ies/flashchat-arbitrary-file-upload-rce third-party-advisory

cve.org (CVE-2013-10038)

nvd.nist.gov (CVE-2013-10038)

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