MISP up to 2.5.41 INI File Kafka_rdkafka_config inclusion of functionality from untrusted control sphere

Summaryinfo

A vulnerability, which was classified as problematic, has been found in MISP up to 2.5.41. This issue affects some unknown processing of the component INI File Handler. The manipulation of the argument Kafka_rdkafka_config leads to inclusion of functionality from untrusted control sphere. This vulnerability is referenced as CVE-2026-56447. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in MISP up to 2.5.41 and classified as problematic. This issue affects an unknown functionality of the component INI File Handler. The manipulation of the argument Kafka_rdkafka_config with an unknown input leads to a inclusion of functionality from untrusted control sphere vulnerability. Using CWE to declare the problem leads to CWE-829. The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

MISP allowed an authenticated site administrator to set the Kafka_rdkafka_config setting to an arbitrary filesystem path. MISP subsequently parsed the referenced INI file and passed its options to rdkafka. A crafted attacker-controlled configuration file could use rdkafka options such as plugin.library.paths to load an external library, resulting in arbitrary code execution with the privileges of the MISP process. An attacker could leverage a MISP-writable location, such as an uploaded file or administrative image, to host the malicious configuration file. The issue is fixed by restricting the setting to absolute .ini files located only in approved configuration directories outside the webroot and MISP upload targets.

The weakness was published by Jeroen Pinoy and Jakub Chyliński as 9600d486ccfc98388e13897fd954350cebac5fb0. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-56447 since 06/22/2026. The exploitation is known to be easy. The attack may be initiated remotely. The exploitation requires an enhanced level of successful authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading eliminates this vulnerability. Applying the patch 9600d486ccfc98388e13897fd954350cebac5fb0 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• MISP

Version

• 2.5.0
• 2.5.1
• 2.5.2
• 2.5.3
• 2.5.4
• 2.5.5
• 2.5.6
• 2.5.7
• 2.5.8
• 2.5.9
• 2.5.10
• 2.5.11
• 2.5.12
• 2.5.13
• 2.5.14
• 2.5.15
• 2.5.16
• 2.5.17
• 2.5.18
• 2.5.19
• 2.5.20
• 2.5.21
• 2.5.22
• 2.5.23
• 2.5.24
• 2.5.25
• 2.5.26
• 2.5.27
• 2.5.28
• 2.5.29
• 2.5.30
• 2.5.31
• 2.5.32
• 2.5.33
• 2.5.34
• 2.5.35
• 2.5.36
• 2.5.37
• 2.5.38
• 2.5.39
• 2.5.40
• 2.5.41

License

• open-source

Website

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

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