CVE-2023-1718

Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access

HIGH
7.5
CVSS Score
Published: November 1, 2023 at 09:04 AM UTC
Updated: June 17, 2026 at 05:28 AM UTC
1 product affected across 1 vendorBitrix24

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Severity
HIGH7.5
Exploit prediction
EPSS 24%
SSVC
PoC

Description

Improper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted "tmp_url".

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHSTAR_Labs
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-835

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