CVE-2025-30153
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.52% probability · 43th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-409
- Source
- security-advisories@github.com
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.