Resource exhaustion in kin-openapi - CVE-2025-30153
Published: October 21, 2025
Vulnerability identifier: #VU117430
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-30153
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: getkin
Affected software:
kin-openapi
kin-openapi
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can upload a crafted ZIP file (e.g., a ZIP bomb), causing the server to consume all available system memory, when application validating a request with a multipart/form-data schema, if the OpenAPI schema allows it.
How to mitigate CVE-2025-30153
Install updates from vendor's website.
Sources
- https://github.com/getkin/kin-openapi/blob/6da871e0e170b7637eb568c265c08bc2b5d6e7a3/openapi3filter/req_resp_decoder.go#L1275
- https://github.com/getkin/kin-openapi/blob/6da871e0e170b7637eb568c265c08bc2b5d6e7a3/openapi3filter/req_resp_decoder.go#L1523
- https://github.com/getkin/kin-openapi/commit/67f0b233ffc01332f7d993f79490fbea5f4455f1
- https://github.com/getkin/kin-openapi/security/advisories/GHSA-wq9g-9vfc-cfq9
- https://github.com/getkin/kin-openapi?tab=readme-ov-file#custom-content-type-for-body-of-http-requestresponse