diff --git a/packages/compiler-cli/src/ngtsc/annotations/common/src/diagnostics.ts b/packages/compiler-cli/src/ngtsc/annotations/common/src/diagnostics.ts
index b41b7fbbac6bd..5afd006f57bbf 100644
--- a/packages/compiler-cli/src/ngtsc/annotations/common/src/diagnostics.ts
+++ b/packages/compiler-cli/src/ngtsc/annotations/common/src/diagnostics.ts
@@ -14,7 +14,7 @@ import {DirectiveMeta, flattenInheritedDirectiveMetadata, HostDirectiveMeta, Met
 import {describeResolvedType, DynamicValue, PartialEvaluator, ResolvedValue, traceDynamicValue} from '../../../partial_evaluator';
 import {ClassDeclaration, ReflectionHost} from '../../../reflection';
 import {DeclarationData, LocalModuleScopeRegistry} from '../../../scope';
-import {identifierOfNode} from '../../../util/src/typescript';
+import {identifierOfNode, isFromDtsFile} from '../../../util/src/typescript';
 
 import {InjectableClassRegistry} from './injectable_registry';
 import {isAbstractClassDeclaration, readBaseClass} from './util';
@@ -256,6 +256,14 @@ export function checkInheritanceOfInjectable(
     return getInheritedUndecoratedCtorDiagnostic(node, classWithCtor.ref, kind);
   }
 
+  if (isFromDtsFile(classWithCtor.ref.node)) {
+    // The inherited class is declared in a declaration file, in which case there is not enough
+    // information to detect invalid constructors as `@Inject()` metadata is not present in the
+    // declaration file. Consequently, we have to accept such occurrences, although they might
+    // still fail at runtime.
+    return null;
+  }
+
   if (!strictInjectionParameters || isAbstractClassDeclaration(node)) {
     // An invalid constructor is only reported as error under `strictInjectionParameters` and
     // only for concrete classes; follow the same exclusions for derived types.
diff --git a/packages/compiler-cli/test/ngtsc/ngtsc_spec.ts b/packages/compiler-cli/test/ngtsc/ngtsc_spec.ts
index c43f13c4d58c7..68d9c1ead3885 100644
--- a/packages/compiler-cli/test/ngtsc/ngtsc_spec.ts
+++ b/packages/compiler-cli/test/ngtsc/ngtsc_spec.ts
@@ -2960,6 +2960,37 @@ function allTests(os: string) {
                   `or add an explicit constructor to ConcreteDirWithoutCtor.`);
           expect(getDiagnosticSourceCode(diags[2])).toBe('ConcreteDirWithoutCtor');
         });
+
+        // https://github.com/angular/angular/issues/48152
+        it('should not give a compile-time error when a class inherits from foreign compilation unit',
+           () => {
+             env.tsconfig({strictInjectionParameters: true});
+             env.write('node_modules/external/index.d.ts', `
+               import * as i0 from '@angular/core';
+
+               export abstract class ExternalClass {
+                 static ɵprov: i0.ɵɵInjectableDeclaration<ExternalClass>;
+                 static ɵfac: i0.ɵɵFactoryDeclaration<ExternalClass, never>
+
+                 constructor(invalid: string) {}
+               }
+          `);
+             env.write('test.ts', `
+               import {Directive} from '@angular/core';
+               import {ExternalClass} from 'external';
+
+               @Directive()
+               export abstract class AbstractMiddleDir extends ExternalClass {}
+
+               @Directive()
+               export class ConcreteMiddleDir extends AbstractMiddleDir {}
+
+               @Directive()
+               export class ConcreteDirWithoutCtor extends ConcreteMiddleDir {}
+             `);
+
+             env.driveMain();
+           });
       });
 
       describe('with strictInjectionParameters = false', () => {