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TI-2025-21492 Aliases CVE-2025-30153GHSA-wq9g-9vfc-cfq9

Improper Handling of Highly Compressed Data (Data Amplification) in github.com/getkin/kin-openapi/openapi3filter

Priority HIGH 72CWE-409Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 1 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00621 50th percentileScored 2026-11-07
Fix Partial kin-openapi (getkin): 0.131.0github.com/getkin/kin-openapi (Go): 0.131.0Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
getkinkin-openapibefore 0.131.00.131.0Patch availableCNA
—github.com/getkin/kin-openapi (Go)before 0.131.00.131.0Patch availableGHSA-wq9g-9vfc-cfq9
  • kin-openapi Vendorgetkin Affected before 0.131.0 Fixed in 0.131.0 Patch available CNA
  • github.com/getkin/kin-openapi (Go) Vendor— Affected before 0.131.0 Fixed in 0.131.0 Patch available GHSA-wq9g-9vfc-cfq9

Remediation

  • Fix · CNA kin-openapi (getkin) Fixed in 0.131.0
  • Fix · GHSA-wq9g-9vfc-cfq9 github.com/getkin/kin-openapi (Go) Fixed in 0.131.0 Advisory →

Red Hat 1 advisory

  • RHSA-2026:22689 Released 2026-06-02 · Red Hat rating Important
    multicluster engine for Kubernetes v2.8.7 security update
    • multicluster engine for Kubernetes 2.8 registry.redhat.io/multicluster-engine/cluster-proxy-addon-rhel9, registry.redhat.io/multicluster-engine/managedcluster-import-controller-rhel9

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Edge Manager previewAffectedNo fix yet
multicluster engine for Kubernetes 2.8Fixed RHSA-2026:22689
Not affected: 5 products
  • Red Hat Edge Manager preview
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • multicluster engine for Kubernetes 2.8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-30153
  2. 2026-10-03 Alias added: GHSA-wq9g-9vfc-cfq9
  3. 2026-11-07 EPSS moved to the 50th–90th percentile

References

Advisory 1

Other 7

  • TI-2026-51613 kin-openapi: ValidationHandler.Load() Fail-Open Authentication Bypass via NoopAuthenticationFunc Default CVSS 3.1CRITICAL 9.1
  • TI-2026-53976 kin-openapi: Uncontrolled resource consumption in openapi3filter deepObject query parameter decoding CVSS 4.0HIGH 8.7
  • TI-2026-74664 Nil pointer panic in kin-openapi openapi3filter decoding CVSS 3.1HIGH 7.5
  • TI-2026-74663 YAML NaN and Inf values cause panic in kin-openapi validation CVSS 3.1HIGH 7.5
  • TI-2026-74661 kin-openapi nil pointer panic in openapi3filter on array schemas without items CVSS 3.1HIGH 7.5
  • TI-2026-74657 Uncontrolled recursion in kin-openapi crashes the process CVSS 3.1HIGH 7.5
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences