Golang github getkin kin openapi: Prior to 0.149.0, runtime request, response, and direct schema validation lacks
Affects golang-github-getkin-kin-openapiSource GCVE Database
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
- 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:HExploitation evidence
Disclosed: evidence found.
CVE published 15 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10golang-github-getkin-kin-openapipkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSgolang-github-getkin-kin-openapipkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSgolang-github-getkin-kin-openapipkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSgolang-github-getkin-kin-openapipkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=jammyOther threats | Affected
| 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. Prior to 0.149.0, runtime request, response, and direct schema validation lacks cycle detection when an allOf, anyOf, or oneOf chain refers back to an ancestor schema, even though loading and document validation accept the circular reference. A request or response that reaches the affected schema causes unbounded recursion in Schema.visitJSON or openapi3filter.decodeValue and exhausts the Go goroutine stack. The resulting fatal stack overflow cannot be caught with recover and terminates the entire process, including unrelated requests. This issue is fixed in version 0.149.0.
References
- ubuntu.com/security/CVE-2026-100354 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-100354 (opens in a new tab)
- github.com/getkin/kin-openapi/security/advisories/GHSA-g8cf-rcjf-c8cf (opens in a new tab)
- github.com/getkin/kin-openapi/commit/9245cef66c840e27a08409a8a5cd0ee930c5bcff (opens in a new tab)
- github.com/getkin/kin-openapi/releases/tag/v0.149.0 (opens in a new tab)