Description
Lack of mime type response header in Bitrix24 22.0.300 allows authenticated remote attackers to execute arbitrary JavaScript code in the victim's browser, and possibly execute arbitrary PHP code on the server if the victim has administrator privilege, via uploading a crafted HTML file through /desktop_app/file.ajax.php?action=uploadfile.
References (1)
Core 1
Core References
Exploit, Third Party Advisory third-party-advisory
https://starlabs.sg/advisories/23/23-1720/
Scores
CVSS v3
9.6
EPSS
0.0102
EPSS Percentile
77.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-434
Status
published
Products (1)
bitrix24/bitrix24
22.0.300
Published
Nov 01, 2023
Tracked Since
Feb 18, 2026