Read the docs
TI-2023-01614 Aliases CVE-2023-1720GHSA-3f75-53r3-6ghw

Bitrix24 Stored Cross-Site Scripting (XSS) via File Upload

Priority HIGH 76CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0111 66th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Bitrix24Bitrix24up to 22.0.300—No fix listedCNA
  • Bitrix24 VendorBitrix24 Affected up to 22.0.300 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:bitrix24:bitrix24:22.0.300:*:*:*:*:*:*:*22.0.300VulnerableBitrix24
  • cpe:2.3:a:bitrix24:bitrix24:22.0.300:*:*:*:*:*:*:* Versions 22.0.300 Vulnerable ·Bitrix24

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-1720
  2. 2026-10-03 Alias added: GHSA-3f75-53r3-6ghw

References

Exploit 1

  • TI-2023-01613 Bitrix24 Insecure Global Variable Extraction CVSS 3.1CRITICAL 9.8
  • TI-2023-01611 Bitrix24 Cross-Site Scripting (XSS) via Client-side Prototype Pollution CVSS 3.1CRITICAL 9.6
  • TI-2023-01608 Bitrix24 Remote Command Execution (RCE) via Unsafe Variable Extraction CVSS 3.1HIGH 8.8
  • TI-2023-01607 Bitrix24 Remote Command Execution (RCE) via Insecure Temporary File Creation CVSS 3.1HIGH 8.8
  • TI-2023-01612 Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access CVSS 3.1HIGH 7.5
  • TI-2024-23125 Insufficiently protected credentials in DAV server settings in 1C-Bitrix Bitrix24… CVSS 3.1MEDIUM 6.8
See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences