CVE catalog
CVE-2026-73502
kin-openapi is a Go project for handling OpenAPI files. From 0.2.0 until 0.144.0, openapi3filter.ValidateRequest can encounter a NULL-pointer-dereference denial of service when an operation declares a
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.51% · Oct 25, 2026
kin-openapi is a Go project for handling OpenAPI files. From 0.2.0 until 0.144.0, openapi3filter.ValidateRequest can encounter a NULL-pointer-dereference denial of service when an operation declares a content parameter whose application/json media type has no schema. In openapi3filter/req_resp_decoder.go, the default defaultContentParameterDecoder dereferences mt.Schema.Value without checking whether mt.Schema is nil, even though doc.Validate() accepts the document under OpenAPI 3.0.x and 3.1.x. A single unauthenticated request supplying the parameter value can panic request validation, causing an aborted request with log growth in the common synchronous net/http path or a full process crash in integrations without recovery. This issue is fixed in version 0.144.0.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | golang-github-getkin-kin-openapi | sid | 0.135.0-1 | vulnerable |
| Debian | golang-github-getkin-kin-openapi | forky | 0.135.0-1 | vulnerable |
| Debian | golang-github-getkin-kin-openapi | trixie | 0.124.0-1 | vulnerable |
| Debian | golang-github-getkin-kin-openapi | bookworm | 0.110.0-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | golang-github-getkin-kin-openapi | source | sid | (unfixed) | not yet assigned | Not reported | [1144951] |
| Debian | golang-github-getkin-kin-openapi | source | forky | (unfixed) | not yet assigned | Not reported | [1144951] |
| Debian | golang-github-getkin-kin-openapi | source | trixie | (unfixed) | not yet assigned | Not reported | [1144951] |
| Debian | golang-github-getkin-kin-openapi | source | bookworm | (unfixed) | not yet assigned | Not reported | [1144951] |
Notes
[trixie] golang-github-getkin-kin-openapi: Minor issue [bookworm] golang-github-getkin-kin-openapi: Minor issue; out of LTS support
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [golang-github-getkin-kin-openapi-dev]Affected
Source package: [golang-github-getkin-kin-openapi]
Details (2)
0.110.0-1· all · bookwormAffected
nvd · golang-github-getkin-kin-openapi · debian · bookworm; nvd · golang-github-getkin-kin-openapi · debian · 12
0.110.0-1· all · bookwormAffected
nvd · golang-github-getkin-kin-openapi · debian · bookworm; nvd · golang-github-getkin-kin-openapi · debian · 12
[Debian 13 (Trixie)]
- [golang-github-getkin-kin-openapi-dev]Affected
Source package: [golang-github-getkin-kin-openapi]
Details (2)
0.124.0-1· all · trixieAffected
nvd · golang-github-getkin-kin-openapi · debian · 13
0.124.0-1· all · trixieAffected
nvd · golang-github-getkin-kin-openapi · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-73502]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-73502]
- [https://security-tracker.debian.org/tracker/CVE-2026-73502]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73502.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]