Cinnamon Kotaemon 0.11.0 ZIP File ui.py _may_extract_zip resource consumption

Summaryinfo

A vulnerability classified as problematic was found in Cinnamon Kotaemon 0.11.0. This vulnerability affects the function _may_extract_zip of the file \libs\ktem\ktem\index\file\ui.py of the component ZIP File Handler. Executing a manipulation can lead to resource consumption. The identification of this vulnerability is CVE-2025-63914. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Cinnamon Kotaemon 0.11.0. This vulnerability affects the function _may_extract_zip of the file \libs\ktem\ktem\index\file\ui.py of the component ZIP File Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

An issue was discovered in Cinnamon kotaemon 0.11.0. The _may_extract_zip function in the \libs\ktem\ktem\index\file\ui.py file does not check the contents of uploaded ZIP files. Although the contents are extracted into a temporary folder that is cleared before each extraction, successfully uploading a ZIP bomb could still cause the server to consume excessive resources during decompression. Moreover, if no further files are uploaded afterward, the extracted data could occupy disk space and potentially render the system unavailable. Anyone with permission to upload files can carry out this attack.

The advisory is shared for download at github.com. This vulnerability was named CVE-2025-63914 since 10/27/2025. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Cinnamon

Name

• Kotaemon

Version

• 0.11.0

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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