CVE WatchOct 15, 2026

CVE-2026-100350

kin-openapi is a Go project for handling OpenAPI files. From 0.145.0 until 0.146.0, openapi3filter repeatedly calls regexp.MustCompile for t

CVSS

5.3

Medium

EPSS

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KEV

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Exploit Today

0-100

Published: Oct 15, 2026 · Last modified: Oct 15, 2026 · CWE-400 · CWE-770 · CWE-1050

EPSS · 30d

Not enough EPSS history yet.

Technical description

kin-openapi is a Go project for handling OpenAPI files. From 0.145.0 until 0.146.0, openapi3filter repeatedly calls regexp.MustCompile for the same parameter-name regular expression inside the per-query-key loop in urlValuesDecoder.DecodeObject used to decode a deepObject query parameter. An unauthenticated remote client can send an affected endpoint a request containing many unrelated query keys, causing ValidateRequest to perform work and allocations proportional to the attacker-controlled key count for every deepObject parameter. The expression itself is fixed and this is not regular expression denial of service; the resource consumption comes from loop-invariant recompilation. This issue is fixed in version 0.146.0.

Official references

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