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Advisory record · GHSA-mh7x-f8wq-4jhx

kin-openapi spec loader panics on a self-referential additionalProperties $ref (nil-pointer DoS)

CVSS 5.3 MediumEPSS 0.0037 · 31st percentile

Published by the GitHub Advisory Database at 15 Oct 2026, 20:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/getkin/kin-openapiGo<0.145.00.145.0
Identifiers
GHSA-mh7x-f8wq-4jhx · CVE-2026-100348 · GO-2026-6789
Weakness (CWE)
CWE-476
Tags
Published
15 Oct 2026
Updated
5 Nov 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

github.com/getkin/kin-openapi versions before 0.145.0 panic when the spec loader processes a self-referential additionalProperties $ref, crashing the process. An attacker who can get the loader to process a crafted OpenAPI document can cause a denial of service. Upgrade to 0.145.0. Until then, avoid loading untrusted specs.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0037, the 31st percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:12 UTC First seen by agentprime
  2. 31 Oct 2026, 14:12 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.