Flowintel up to 3.3.0 Log Path Validation validate_log_file_name LOG_FILE code injection

Summaryinfo

A vulnerability classified as problematic was found in Flowintel up to 3.3.0. This issue affects the function validate_log_file_name of the component Log Path Validation. Such manipulation of the argument LOG_FILE leads to code injection. This vulnerability is listed as CVE-2026-81743. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Flowintel up to 3.3.0 and classified as problematic. Affected by this issue is the function validate_log_file_name of the component Log Path Validation. The manipulation of the argument LOG_FILE with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Affected versions of Flowintel allow the LOG_FILE configuration value to be modified through system settings without restricting it to a filename inside the intended log directory. Because the application constructs the log destination from this configurable value, an administrator could set LOG_FILE to an arbitrary filesystem path. Since attackers can influence logged content, this enables controlled data to be written into unintended files. The upstream commit specifically describes an exploitation chain in which an attacker injects a template into a chosen file and subsequently abuses application rendering behavior to execute code. The patch removes LOG_FILE from the web-editable settings, introduces validate_log_file_name() to reject absolute paths, traversal, Windows paths, null bytes, and directory components, and centralizes log path construction through resolve_log_file_path(). Version impacted: >=3.3.0

The advisory is available at github.com. This vulnerability is handled as CVE-2026-81743 since 08/27/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are necessary for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

Applying the patch 13785ee5d70a54d0ac97ba89dd31a478a86fc161 is able to eliminate this problem.

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Productinfo

Name

• Flowintel

Version

• 3.0
• 3.1
• 3.2
• 3.3.0

Website

• Product: https://github.com/flowintel/flowintel/

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