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CVE-2026-100353VulnerabilityPublished Updated

Golang github getkin kin openapi: From 0.136.0 until 0.149.0, three openapi3filter decoder paths that were missed by

Affects golang-github-getkin-kin-openapiSource GCVE Database

0
Authoritative record:CVE-2026-100353· High 7.5

Not known to be exploited · CVSS 7.5 High · fixed in 0.149.0 : patch golang-github-getkin-kin-openapi soon.

Data as of 28 Oct 2026, 22:30 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 0.149.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10golang-github-getkin-kin-openapipkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=stonkingOther threatsAffected
  • =0.124.0-1
  • =0.135.0-1
Fixed in–
Ubuntu 26.04 LTSgolang-github-getkin-kin-openapipkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=resoluteOther threatsAffected
  • =0.124.0-1
Fixed in–
Ubuntu 24.04 LTSgolang-github-getkin-kin-openapipkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=nobleOther threatsAffected
  • 0.117.0-1 – 0.123.0-1
4 affected builds
Fixed in–
Ubuntu 22.04 LTSgolang-github-getkin-kin-openapipkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=jammyOther threatsAffected
  • =0.32.0-2
  • =0.80.0-1
  • =0.85.0-1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

kin-openapi is a Go project for handling OpenAPI files. From 0.136.0 until 0.149.0, three openapi3filter decoder paths that were missed by the fix for GHSA-p6wj-qrr4-pgh5 lack a nil-items guard for legal OpenAPI 3.1 array schemas. An unauthenticated remote client can trigger a deterministic nil-pointer panic through an array query parameter, a deepObject query parameter containing an array property, or an application/x-www-form-urlencoded request body whose array property appears inside an allOf, anyOf, or oneOf subschema. The query and composed-body paths reach urlValuesDecoder.parseArray, while the deepObject path reaches buildResObj, and all pass a nil items schema into code that dereferences it. This issue is fixed in version 0.149.0.

References

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