getkin kin-openapi up to 0.130.x ZIP File data amplification

Summaryinfo

A vulnerability classified as problematic has been found in getkin kin-openapi up to 0.130.x. Affected by this issue is some unknown functionality of the component ZIP File Handler. This manipulation causes data amplification. This vulnerability appears as CVE-2025-30153. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in getkin kin-openapi up to 0.130.x. It has been declared as problematic. Affected by this vulnerability is some unknown processing of the component ZIP File Handler. The manipulation with an unknown input leads to a data amplification vulnerability. The CWE definition for the vulnerability is CWE-409. The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output. As an impact it is known to affect availability. The summary by CVE is:

kin-openapi is a Go project for handling OpenAPI files. Prior to 0.131.0, when validating a request with a multipart/form-data schema, if the OpenAPI schema allows it, an attacker can upload a crafted ZIP file (e.g., a ZIP bomb), causing the server to consume all available system memory. The root cause comes from the ZipFileBodyDecoder, which is registered automatically by the module (contrary to what the documentation says). This vulnerability is fixed in 0.131.0.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2025-30153 since 03/17/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 275972 (TencentOS Server 4: grafana-pcp (TSSA-2025:0707)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.131.0 eliminates this vulnerability. Applying the patch 67f0b233ffc01332f7d993f79490fbea5f4455f1 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.

The vulnerability is also documented in the databases at Tenable (275972) and EUVD (EUVD-2025-6729). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• getkin

Name

• kin-openapi

Version

• 0.130

License

• open-source

Website

• Product: https://github.com/getkin/kin-openapi/

CPE 2.3info

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Be aware that VulDB is the high quality source for vulnerability data.

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