diff --git a/image/decoders/icon/nsIconURI.cpp b/image/decoders/icon/nsIconURI.cpp
index e354a0f6cff0..49e5302082d5 100644
--- a/image/decoders/icon/nsIconURI.cpp
+++ b/image/decoders/icon/nsIconURI.cpp
@@ -144,6 +144,12 @@ nsMozIconURI::GetHasRef(bool* result) {
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsMozIconURI::GetHasUserPass(bool* result) {
+  *result = false;
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 nsMozIconURI::GetHasQuery(bool* result) {
   *result = false;
diff --git a/modules/libjar/nsJARURI.cpp b/modules/libjar/nsJARURI.cpp
index 981e93b4ec9c..c55868cdfdf0 100644
--- a/modules/libjar/nsJARURI.cpp
+++ b/modules/libjar/nsJARURI.cpp
@@ -170,6 +170,11 @@ nsJARURI::GetDisplayHost(nsACString& aUnicodeHost) {
 NS_IMETHODIMP
 nsJARURI::GetHasRef(bool* result) { return mJAREntry->GetHasRef(result); }
 
+NS_IMETHODIMP
+nsJARURI::GetHasUserPass(bool* result) {
+  return mJAREntry->GetHasUserPass(result);
+}
+
 NS_IMETHODIMP
 nsJARURI::GetHasQuery(bool* result) { return mJAREntry->GetHasQuery(result); }
 
diff --git a/netwerk/base/DefaultURI.cpp b/netwerk/base/DefaultURI.cpp
index bfa0015e68da..0510305110d5 100644
--- a/netwerk/base/DefaultURI.cpp
+++ b/netwerk/base/DefaultURI.cpp
@@ -228,6 +228,11 @@ NS_IMETHODIMP DefaultURI::GetHasRef(bool* aHasRef) {
   return NS_OK;
 }
 
+NS_IMETHODIMP DefaultURI::GetHasUserPass(bool* aHasUserPass) {
+  *aHasUserPass = !mURL->Username().IsEmpty() || !mURL->Password().IsEmpty();
+  return NS_OK;
+}
+
 NS_IMETHODIMP DefaultURI::GetFilePath(nsACString& aFilePath) {
   aFilePath = mURL->FilePath();
   return NS_OK;
diff --git a/netwerk/base/nsIURI.idl b/netwerk/base/nsIURI.idl
index 99ac05900881..993e0374a84a 100644
--- a/netwerk/base/nsIURI.idl
+++ b/netwerk/base/nsIURI.idl
@@ -250,6 +250,11 @@ interface nsIURI : nsISupports
      */
     readonly attribute boolean hasRef;
 
+    /**
+     * Returns if there is user and pass in the URI.
+     */
+    readonly attribute boolean hasUserPass;
+
     /************************************************************************
      * Additional attributes added for .query support:
      */
diff --git a/netwerk/base/nsSimpleURI.cpp b/netwerk/base/nsSimpleURI.cpp
index 21cfc1302252..56e3300ffe14 100644
--- a/netwerk/base/nsSimpleURI.cpp
+++ b/netwerk/base/nsSimpleURI.cpp
@@ -264,6 +264,12 @@ nsSimpleURI::GetHasRef(bool* result) {
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsSimpleURI::GetHasUserPass(bool* result) {
+  *result = false;
+  return NS_OK;
+}
+
 nsresult nsSimpleURI::SetSpecInternal(const nsACString& aSpec,
                                       bool aStripWhitespace) {
   if (StaticPrefs::network_url_max_length() &&
diff --git a/netwerk/base/nsStandardURL.cpp b/netwerk/base/nsStandardURL.cpp
index 65530fe06be8..dfc9b3c5cda7 100644
--- a/netwerk/base/nsStandardURL.cpp
+++ b/netwerk/base/nsStandardURL.cpp
@@ -2980,6 +2980,12 @@ nsStandardURL::GetHasRef(bool* result) {
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsStandardURL::GetHasUserPass(bool* result) {
+  *result = (mUsername.mLen >= 0) || (mPassword.mLen >= 0);
+  return NS_OK;
+}
+
 // result may contain unescaped UTF-8 characters
 NS_IMETHODIMP
 nsStandardURL::GetDirectory(nsACString& result) {
diff --git a/netwerk/protocol/res/SubstitutingJARURI.h b/netwerk/protocol/res/SubstitutingJARURI.h
index 12cc5f48890d..85976d490849 100644
--- a/netwerk/protocol/res/SubstitutingJARURI.h
+++ b/netwerk/protocol/res/SubstitutingJARURI.h
@@ -122,6 +122,10 @@ class SubstitutingJARURI : public nsIJARURI,
   NS_IMETHOD GetHasRef(bool* aHasRef) override {
     return !mSource ? NS_ERROR_NULL_POINTER : mSource->GetHasRef(aHasRef);
   }
+  NS_IMETHOD GetHasUserPass(bool* aHasUserPass) override {
+    return !mSource ? NS_ERROR_NULL_POINTER
+                    : mSource->GetHasUserPass(aHasUserPass);
+  }
   NS_IMETHOD GetHasQuery(bool* aHasQuery) override {
     return !mSource ? NS_ERROR_NULL_POINTER : mSource->GetHasQuery(aHasQuery);
   }
diff --git a/netwerk/test/unit/test_URIs.js b/netwerk/test/unit/test_URIs.js
index 464ecd391369..98c24132f51a 100644
--- a/netwerk/test/unit/test_URIs.js
+++ b/netwerk/test/unit/test_URIs.js
@@ -493,10 +493,15 @@ function do_test_uri_basic(aTest) {
   do_check_property(aTest, URI, "password");
   do_check_property(aTest, URI, "host");
   do_check_property(aTest, URI, "specIgnoringRef");
-  if ("hasRef" in aTest) {
-    do_info("testing hasref: " + aTest.hasRef + " vs " + URI.hasRef);
-    Assert.equal(aTest.hasRef, URI.hasRef);
-  }
+
+  do_info("testing hasRef");
+  Assert.equal(URI.hasRef, !!aTest.ref, "URI.hasRef is correct");
+  do_info("testing hasUserPass");
+  Assert.equal(
+    URI.hasUserPass,
+    !!aTest.username || !!aTest.password,
+    "URI.hasUserPass is correct"
+  );
 }
 
 // Test that a given URI parses correctly when we add a given ref to the end
diff --git a/netwerk/test/unit/test_defaultURI.js b/netwerk/test/unit/test_defaultURI.js
index 92ac3042b307..36f6432db459 100644
--- a/netwerk/test/unit/test_defaultURI.js
+++ b/netwerk/test/unit/test_defaultURI.js
@@ -17,6 +17,7 @@ add_task(function test_getters() {
   equal(uri.userPass, "user:password");
   equal(uri.username, "user");
   equal(uri.password, "password");
+  equal(uri.hasUserPass, true);
   equal(uri.hostPort, "hostname:123");
   equal(uri.host, "hostname");
   equal(uri.port, 123);