@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 - With `--dynamic-sbom-inference`, an sbt build that fails before writing its results is reported as failed instead of reusing another build's results.
 - `socket scan create --reach` keeps the private libraries and build modules of Socket facts files in the stored SBOM, with their dependencies under them.
 - JVM dependencies whose jars cannot be fetched, or are gone from disk, no longer reach reachability analysis looking resolved without code.
+- One unresolvable Maven dependency no longer strips the jar paths from every other dependency of its build, which made reachability analysis call their vulnerabilities unreachable. Jars that cannot be fetched are reported with their real cause, Maven 4 included.
 
 ## [1.10.0](https://github.com/SocketDev/socket-cli/releases/tag/v1.10.0) - 2026-10-22
 
 
@@ -5,6 +5,7 @@
 import org.apache.maven.execution.MavenSession;
 import org.apache.maven.project.ProjectDependenciesResolver;
 import org.apache.maven.rtinfo.RuntimeInformation;
+import org.eclipse.aether.RepositorySystem;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import tech.coana.socket.SocketFactsRecordsEngine;
@@ -28,12 +29,16 @@ public class CoanaFactsLifecycleParticipant extends AbstractMavenLifecyclePartic
   private static final Logger LOG = LoggerFactory.getLogger("coana");
 
   private final ProjectDependenciesResolver dependenciesResolver;
+  private final RepositorySystem repositorySystem;
   private final RuntimeInformation runtimeInformation;
 
   @Inject
   public CoanaFactsLifecycleParticipant(
-      ProjectDependenciesResolver dependenciesResolver, RuntimeInformation runtimeInformation) {
+      ProjectDependenciesResolver dependenciesResolver,
+      RepositorySystem repositorySystem,
+      RuntimeInformation runtimeInformation) {
     this.dependenciesResolver = dependenciesResolver;
+    this.repositorySystem = repositorySystem;
     this.runtimeInformation = runtimeInformation;
   }
 
@@ -55,7 +60,7 @@ public void afterSessionEnd(MavenSession session) throws MavenExecutionException
     opts.excludePaths = opt(session, "socket.excludePaths");
     File rootDir = new File(session.getExecutionRootDirectory());
     try {
-      new SocketFactsRecordsEngine(dependenciesResolver, runtimeInformation.getMavenVersion(), LOG)
+      new SocketFactsRecordsEngine(dependenciesResolver, repositorySystem, runtimeInformation.getMavenVersion(), LOG)
           .run(session, session.getProjects(), rootDir, opts);
     } catch (IOException exception) {
       throw new MavenExecutionException("Cannot write socket facts records", exception);
 
@@ -8,11 +8,14 @@
 import org.apache.maven.project.DependencyResolutionResult;
 import org.apache.maven.project.MavenProject;
 import org.apache.maven.project.ProjectDependenciesResolver;
+import org.eclipse.aether.RepositorySystem;
 import org.eclipse.aether.artifact.Artifact;
 import org.eclipse.aether.graph.Dependency;
 import org.eclipse.aether.graph.DependencyFilter;
 import org.eclipse.aether.graph.DependencyNode;
 import org.eclipse.aether.resolution.ArtifactDescriptorException;
+import org.eclipse.aether.resolution.ArtifactResult;
+import org.eclipse.aether.resolution.DependencyRequest;
 import org.eclipse.aether.resolution.VersionRangeResolutionException;
 import org.slf4j.Logger;
 
@@ -72,12 +75,15 @@ public static final class Options {
   private static final String NODE_DATA_CONFLICT_WINNER = "conflict.winner";
 
   private final ProjectDependenciesResolver dependenciesResolver;
+  private final RepositorySystem repositorySystem;
   private final String mavenVersion;
   private final Logger log;
 
   public SocketFactsRecordsEngine(
-      ProjectDependenciesResolver dependenciesResolver, String mavenVersion, Logger log) {
+      ProjectDependenciesResolver dependenciesResolver, RepositorySystem repositorySystem, String mavenVersion,
+      Logger log) {
     this.dependenciesResolver = dependenciesResolver;
+    this.repositorySystem = repositorySystem;
     this.mavenVersion = mavenVersion;
     this.log = log;
   }
@@ -166,10 +172,11 @@ private void collectModule(
     String moduleCoord = module.getGroupId() + ":" + module.getArtifactId() + ":" + module.getVersion();
     DependencyResolutionResult result;
     DependencyResolutionException thrown = null;
+    DependencyFilter resolutionFilter = materializationFilter(opts, passingScopes, reactorGavs, populateGavs);
     try {
       DependencyResolutionRequest request =
           new DefaultDependencyResolutionRequest(module, session.getRepositorySession());
-      request.setResolutionFilter(materializationFilter(opts, passingScopes, reactorGavs, populateGavs));
+      request.setResolutionFilter(resolutionFilter);
       result = dependenciesResolver.resolve(request);
     } catch (DependencyResolutionException e) {
       // Maven attaches the partial result — graph plus per-dependency errors — to the exception, so
@@ -205,13 +212,16 @@ private void collectModule(
       log.warn("[socket-facts] could not build dependency graph for " + moduleCoord + ": " + rootMessage(e));
       reported = true;
     }
+    // Maven throws on a collection error before it fetches any artifact, which would leave every
+    // healthy node of the partial graph without its file.
+    Set<String> unfetched = new HashSet<>();
+    if (!result.getCollectionErrors().isEmpty() && graph != null && opts.withFiles) {
+      materialize(session, graph, resolutionFilter, unresolved, moduleCoord, failures, unfetched);
+    }
     for (Dependency dep : result.getUnresolvedDependencies()) {
       Artifact artifact = dep.getArtifact();
-      if (artifact == null) continue;
-      List<Exception> errors = result.getResolutionErrors(dep);
-      failures.add(new Failure(
-          gav(artifact), rootMessage(errors.isEmpty() ? null : errors.get(0)), scopeOf(dep), moduleCoord));
-      log.debug("[socket-facts] could not materialize " + artifact + " (" + scopeOf(dep) + ")");
+      if (artifact == null || unresolved.contains(gav(artifact))) continue;
+      reportUnfetched(dep, result.getResolutionErrors(dep), moduleCoord, failures, unfetched);
       reported = true;
     }
     // Fail closed: a throw whose result named nothing must still surface, or an unresolved dependency
@@ -233,6 +243,10 @@ private void collectModule(
         if (isProd(scopeOf(child.getDependency()))) directProdIds.add(id);
       }
     }
+    for (String id : unfetched) {
+      Node node = nodes.get(id);
+      if (node != null) node.unfetched = true;
+    }
   }
 
   /**
@@ -275,6 +289,47 @@ public boolean accept(DependencyNode node, List<DependencyNode> parents) {
     };
   }
 
+  /**
+   * The artifact step Maven skipped, run on the partial graph the way the resolver's own
+   * {@code resolveDependencies} continues past a collection failure. The failed dependencies are left
+   * out: they are never emitted, and fetching them again would only repeat the failure.
+   */
+  private void materialize(
+      MavenSession session,
+      DependencyNode graph,
+      final DependencyFilter resolutionFilter,
+      final Set<String> unresolved,
+      String moduleCoord,
+      Set<Failure> failures,
+      Set<String> unfetched) {
+    DependencyFilter healthy = new DependencyFilter() {
+      @Override
+      public boolean accept(DependencyNode node, List<DependencyNode> parents) {
+        return resolutionFilter.accept(node, parents) && !unresolved.contains(gav(node.getArtifact()));
+      }
+    };
+    List<ArtifactResult> results;
+    try {
+      results = repositorySystem
+          .resolveDependencies(session.getRepositorySession(), new DependencyRequest(graph, healthy))
+          .getArtifactResults();
+    } catch (org.eclipse.aether.resolution.DependencyResolutionException e) {
+      results = e.getResult().getArtifactResults();
+    }
+    for (ArtifactResult ar : results) {
+      if (ar.isResolved()) continue;
+      reportUnfetched(ar.getRequest().getDependencyNode().getDependency(), ar.getExceptions(), moduleCoord, failures, unfetched);
+    }
+  }
+
+  private void reportUnfetched(
+      Dependency dep, List<Exception> errors, String moduleCoord, Set<Failure> failures, Set<String> unfetched) {
+    String id = externalId(dep.getArtifact());
+    failures.add(new Failure(id, rootMessage(errors.isEmpty() ? null : errors.get(0)), scopeOf(dep), moduleCoord));
+    unfetched.add(id);
+    log.debug("[socket-facts] could not materialize " + dep.getArtifact() + " (" + scopeOf(dep) + ")");
+  }
+
   private String visit(
       DependencyNode dn,
       Set<String> passingScopes,
@@ -295,16 +350,12 @@ private String visit(
     String gav = gav(artifact);
     if (unresolved.contains(gav)) return null;
     boolean internal = reactorGavs.contains(gav);
-    // Maven's `type` rather than aether's file extension, so a test-jar keeps the coordId the
-    // assembler and the Gradle/SBT scripts already emit.
     String type = artifact.getProperty(ARTIFACT_PROPERTY_TYPE, artifact.getExtension());
     String classifier = artifact.getClassifier();
-    // Base version: a resolved remote snapshot's `version` is the timestamped build, which would
-    // put a coordinate in the records that no manifest ever names.
     String version = artifact.getBaseVersion();
     String id = internal
         ? SocketSupport.bareId(artifact.getGroupId(), artifact.getArtifactId(), version)
-        : SocketSupport.coordId(artifact.getGroupId(), artifact.getArtifactId(), type, classifier, version);
+        : externalId(artifact);
 
     // One walk per node per module traversal: a shared subtree reached via another edge is already
     // fully recorded (node, children, resolved file), so hand back the id without re-descending.
@@ -329,6 +380,17 @@ private String visit(
     return id;
   }
 
+  private static String externalId(Artifact artifact) {
+    // Maven's `type` rather than aether's file extension, so a test-jar keeps the coordId the
+    // assembler and the Gradle/SBT scripts already emit. Base version: a resolved remote snapshot's
+    // `version` is the timestamped build, which would put a coordinate in the records that no
+    // manifest ever names.
+    return SocketSupport.coordId(
+        artifact.getGroupId(), artifact.getArtifactId(),
+        artifact.getProperty(ARTIFACT_PROPERTY_TYPE, artifact.getExtension()), artifact.getClassifier(),
+        artifact.getBaseVersion());
+  }
+
   private static String gav(Artifact artifact) {
     return artifact.getGroupId() + ":" + artifact.getArtifactId() + ":" + artifact.getBaseVersion();
   }
@@ -405,6 +467,7 @@ private int emitRoot(
         if (nodeMap.containsKey(child)) rec(lines, "edge", rootId, n.id, child);
       }
       for (String f : n.files) rec(lines, "file", rootId, n.id, f);
+      if (n.unfetched) rec(lines, "unfetched", rootId, n.id);
     }
     return rootIdx + 1;
   }
@@ -519,7 +582,11 @@ private static String rootMessage(Throwable t) {
     int guard = 0;
     while (cur != null && guard++ < 12) {
       if (cur.getMessage() != null) msg = cur.getMessage();
-      cur = cur.getCause();
+      Throwable next = cur.getCause();
+      // Maven 4 batches requests: BatchRequestException carries each failed request as a suppressed
+      // exception, not as its cause.
+      if (next == null && cur.getSuppressed().length > 0) next = cur.getSuppressed()[0];
+      cur = next;
     }
     return (msg != null ? msg : "unknown resolution failure").trim();
   }
@@ -623,6 +690,7 @@ private static final class Node {
     final String project;
     final TreeSet<String> children = new TreeSet<>();
     final TreeSet<String> files = new TreeSet<>();
+    boolean unfetched;
 
     Node(String id, String groupId, String artifactId, String type, String classifier, String version, String project) {
       this.id = id;
 
@@ -9,15 +9,20 @@
     <maven.compiler.target>8</maven.compiler.target>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
-  <!-- ok resolves. The rest fail while Maven collects the graph: lib's and testlib's POMs name a parent that cannot be
-       fetched, which leaves them in the graph with their scope; no version of ranged exists, which
-       leaves it out of the graph. -->
+  <!-- ok resolves. nojar's POM resolves but its jar is absent. The rest fail while Maven collects the graph: lib's
+       and testlib's POMs name a parent that cannot be fetched, which leaves them in the graph with their scope; no
+       version of ranged exists, which leaves it out of the graph. -->
   <dependencies>
     <dependency>
       <groupId>demo.graphfail</groupId>
       <artifactId>ok</artifactId>
       <version>1.0</version>
     </dependency>
+    <dependency>
+      <groupId>demo.graphfail</groupId>
+      <artifactId>nojar</artifactId>
+      <version>1.0</version>
+    </dependency>
     <dependency>
       <groupId>demo.graphfail</groupId>
       <artifactId>lib</artifactId>
 
@@ -3,7 +3,9 @@
 # dependency, in the module it was collected for, and never emitted as a node. Maven keeps a
 # dependency whose POM failed in the graph (Maven 3.2's resolver leaves it out instead), so it fails
 # in its own scope, and an excluded scope drops it; a dependency the graph lacks (an unsatisfiable
-# range) has no scope. The module itself must never be reported as the failure.
+# range) has no scope. The module itself must never be reported as the failure. Under --with-files,
+# every healthy dependency must still get its file, and a jar that cannot be fetched is reported under
+# its full coordinate, with the cause rather than a wrapper.
 #
 # Runs offline: the POMs are seeded straight into the local repository, so their missing parent and
 # the absent versions of ranged can only fail to resolve.
@@ -34,15 +36,18 @@ for lib in lib testlib; do
 </project>
 POM
 done
-mkdir -p "$M2/demo/graphfail/ok/1.0"
-cat > "$M2/demo/graphfail/ok/1.0/ok-1.0.pom" <<'POM'
+for lib in ok nojar; do
+  mkdir -p "$M2/demo/graphfail/$lib/1.0"
+  cat > "$M2/demo/graphfail/$lib/1.0/$lib-1.0.pom" <<POM
 <project xmlns="http://maven.apache.org/POM/4.0.0">
   <modelVersion>4.0.0</modelVersion>
   <groupId>demo.graphfail</groupId>
-  <artifactId>ok</artifactId>
+  <artifactId>$lib</artifactId>
   <version>1.0</version>
 </project>
 POM
+done
+( cd "$M2/demo/graphfail/ok/1.0" && mkdir -p empty && jar cf ok-1.0.jar -C empty . && rm -r empty )
 
 run() {
   rm -f "$RECORDS"
@@ -100,6 +105,32 @@ print(f"PASS (graph failure): {expected}")
 PY
 }
 
+check_files() {
+  python3 - "$RECORDS" <<'PY'
+import sys
+rows = [l.rstrip('\n').split('\t') for l in open(sys.argv[1]) if l.strip()]
+files = {r[2] for r in rows if r[0] == 'file'}
+failures = {(r[1], r[3]) for r in rows if r[0] == 'failure'}
+details = {r[2] for r in rows if r[0] == 'failure' and r[1] == 'demo.graphfail:nojar:jar:1.0'}
+unfetched = {r[2] for r in rows if r[0] == 'unfetched'}
+errors = []
+if 'demo.graphfail:ok:jar:1.0' not in files:
+    errors.append(f"ok resolved, so its jar must be materialized despite the collection errors; files={sorted(files)}")
+if ('demo.graphfail:nojar:jar:1.0', 'compile') not in failures:
+    errors.append(f"nojar's jar cannot be fetched, so it must be reported; failures={sorted(failures)}")
+if any('One or more requests failed' in d for d in details):
+    errors.append(f"nojar's failure must give the cause, not the batch wrapper; details={sorted(details)}")
+if unfetched != {'demo.graphfail:nojar:jar:1.0'}:
+    errors.append(f"only nojar's jar is unfetched; unfetched={sorted(unfetched)}")
+if errors:
+    print("FAIL:")
+    for e in errors:
+        print("  -", e)
+    sys.exit(1)
+print("PASS (graph failure, with files)")
+PY
+}
+
 VERSION="$("$MVN" -v 2>/dev/null | head -1)"
 echo "+ $VERSION (graph failure)"
 case "$VERSION" in
@@ -110,3 +141,6 @@ run
 check '{"demo.graphfail:lib:1.0": "compile", "demo.graphfail:testlib:1.0": "test", "demo.graphfail:ranged:[1.0,2.0)": ""}'
 run -Dsocket.excludeConfigs=test
 check '{"demo.graphfail:lib:1.0": "compile", "demo.graphfail:testlib:1.0": null, "demo.graphfail:ranged:[1.0,2.0)": ""}'
+run -Dsocket.withFiles=true
+check '{"demo.graphfail:lib:1.0": "compile", "demo.graphfail:testlib:1.0": "test", "demo.graphfail:ranged:[1.0,2.0)": ""}'
+check_files