diff --git a/browser/components/originattributes/test/browser/browser_favicon_firstParty.js b/browser/components/originattributes/test/browser/browser_favicon_firstParty.js
index d350aee8da57..5997c4af5476 100644
--- a/browser/components/originattributes/test/browser/browser_favicon_firstParty.js
+++ b/browser/components/originattributes/test/browser/browser_favicon_firstParty.js
@@ -183,8 +183,8 @@ async function assignCookiesUnderFirstParty(aURL, aFirstParty, aCookieValue) {
 async function generateCookies(aThirdParty) {
   // we generate two different cookies for two first party domains.
   let cookies = [];
-  cookies.push(Math.random().toString() + "=1");
-  cookies.push(Math.random().toString() + "=1");
+  cookies.push(Math.random().toString());
+  cookies.push(Math.random().toString());
 
   let firstSiteURL;
   let secondSiteURL;
diff --git a/browser/components/originattributes/test/browser/browser_favicon_userContextId.js b/browser/components/originattributes/test/browser/browser_favicon_userContextId.js
index 62f042aed2e4..00457eb1a522 100644
--- a/browser/components/originattributes/test/browser/browser_favicon_userContextId.js
+++ b/browser/components/originattributes/test/browser/browser_favicon_userContextId.js
@@ -128,8 +128,8 @@ function waitOnFaviconLoaded(aFaviconURL) {
 async function generateCookies(aHost) {
   // we generate two different cookies for two userContextIds.
   let cookies = [];
-  cookies.push(Math.random().toString() + "=1");
-  cookies.push(Math.random().toString() + "=1");
+  cookies.push(Math.random().toString());
+  cookies.push(Math.random().toString());
 
   // Then, we add cookies into the site for 'personal' and 'work'.
   let tabInfoA = await openTabInUserContext(aHost, USER_CONTEXT_ID_PERSONAL);
diff --git a/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js b/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js
index bbeebc5cea1c..bac6fa648631 100644
--- a/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js
+++ b/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js
@@ -189,8 +189,8 @@ add_task(async function test_favicon_privateBrowsing() {
   // Generate two random cookies for non-private window and private window
   // respectively.
   let cookies = [];
-  cookies.push(Math.random().toString() + "=1");
-  cookies.push(Math.random().toString() + "=1");
+  cookies.push(Math.random().toString());
+  cookies.push(Math.random().toString());
 
   // Open a tab in private window and add a cookie into it.
   await assignCookies(privateWindow.gBrowser, TEST_SITE, cookies[0]);
diff --git a/browser/components/sessionstore/test/browser_sessionStoreContainer.js b/browser/components/sessionstore/test/browser_sessionStoreContainer.js
index e5627e23c66f..74830f16f0a3 100644
--- a/browser/components/sessionstore/test/browser_sessionStoreContainer.js
+++ b/browser/components/sessionstore/test/browser_sessionStoreContainer.js
@@ -114,7 +114,7 @@ add_task(async function test() {
   for (let userContextId of Object.keys(USER_CONTEXTS)) {
     // Load the page in 3 different contexts and set a cookie
     // which should only be visible in that context.
-    let cookie = USER_CONTEXTS[userContextId] + "=1";
+    let cookie = USER_CONTEXTS[userContextId];
 
     // Open our tab in the given user context.
     let { tab, browser } = await openTabInUserContext(userContextId);
diff --git a/dom/browser-element/mochitest/file_browserElement_CookiesNotThirdParty.html b/dom/browser-element/mochitest/file_browserElement_CookiesNotThirdParty.html
index 053953ed6fea..ff122f31a44f 100644
--- a/dom/browser-element/mochitest/file_browserElement_CookiesNotThirdParty.html
+++ b/dom/browser-element/mochitest/file_browserElement_CookiesNotThirdParty.html
@@ -5,11 +5,11 @@ file_browserElement_CookiesNotThirdParty.html
 <script type='text/javascript'>
 if (location.search != "?step=2") {
   // Step 1: Set a cookie.
-  document.cookie = "file_browserElement_CookiesNotThirdParty=1";
+  document.cookie = "file_browserElement_CookiesNotThirdParty";
   alert("next");
 } else {
   // Step 2: Read the cookie.
-  if (document.cookie == "file_browserElement_CookiesNotThirdParty=1") {
+  if (document.cookie == "file_browserElement_CookiesNotThirdParty") {
     alert("success: got the correct cookie");
   } else {
     alert('failure: got unexpected cookie: "' + document.cookie + '"');
diff --git a/netwerk/cookie/nsCookieService.cpp b/netwerk/cookie/nsCookieService.cpp
index 23b4fb05a2b0..cceae5079db5 100644
--- a/netwerk/cookie/nsCookieService.cpp
+++ b/netwerk/cookie/nsCookieService.cpp
@@ -3239,8 +3239,7 @@ bool nsCookieService::CanSetCookie(nsIURI* aHostURI, const nsCookieKey& aKey,
 
   // newCookie says whether there are multiple cookies in the header;
   // so we can handle them separately.
-  bool discard = false;
-  bool newCookie = ParseAttributes(aCookieHeader, aCookieAttributes, discard);
+  bool newCookie = ParseAttributes(aCookieHeader, aCookieAttributes);
 
   // Collect telemetry on how often secure cookies are set from non-secure
   // origins, and vice-versa.
@@ -3386,7 +3385,7 @@ bool nsCookieService::CanSetCookie(nsIURI* aHostURI, const nsCookieKey& aKey,
     }
   }
 
-  aSetCookie = !discard;
+  aSetCookie = true;
   return newCookie;
 }
 
@@ -3787,8 +3786,7 @@ bool nsCookieService::GetTokenValue(nsACString::const_char_iterator& aIter,
 // folded into the cookie struct here, because we don't know which one to use
 // until we've parsed the header.
 bool nsCookieService::ParseAttributes(nsDependentCString& aCookieHeader,
-                                      nsCookieAttributes& aCookieAttributes,
-                                      bool& aDiscard) {
+                                      nsCookieAttributes& aCookieAttributes) {
   static const char kPath[] = "path";
   static const char kDomain[] = "domain";
   static const char kExpires[] = "expires";
@@ -3808,8 +3806,6 @@ bool nsCookieService::ParseAttributes(nsDependentCString& aCookieHeader,
   aCookieAttributes.isHttpOnly = false;
   aCookieAttributes.sameSite = nsICookie2::SAMESITE_UNSET;
 
-  aDiscard = false;
-
   nsDependentCSubstring tokenString(cookieStart, cookieStart);
   nsDependentCSubstring tokenValue(cookieStart, cookieStart);
   bool newCookie, equalsFound;
@@ -3824,11 +3820,8 @@ bool nsCookieService::ParseAttributes(nsDependentCString& aCookieHeader,
   if (equalsFound) {
     aCookieAttributes.name = tokenString;
     aCookieAttributes.value = tokenValue;
-    if (aCookieAttributes.name.IsEmpty()) {
-      aDiscard = true;
-    }
   } else {
-    aDiscard = true;
+    aCookieAttributes.value = tokenString;
   }
 
   // extract remaining attributes
@@ -3836,10 +3829,6 @@ bool nsCookieService::ParseAttributes(nsDependentCString& aCookieHeader,
     newCookie = GetTokenValue(cookieStart, cookieEnd, tokenString, tokenValue,
                               equalsFound);
 
-    if (aDiscard) {
-      continue;
-    }
-
     if (!tokenValue.IsEmpty()) {
       tokenValue.BeginReading(tempBegin);
       tokenValue.EndReading(tempEnd);
diff --git a/netwerk/cookie/nsCookieService.h b/netwerk/cookie/nsCookieService.h
index f614cc0822f9..c0a65bce2aa8 100644
--- a/netwerk/cookie/nsCookieService.h
+++ b/netwerk/cookie/nsCookieService.h
@@ -341,8 +341,7 @@ class nsCookieService final : public nsICookieService,
                             nsDependentCSubstring& aTokenValue,
                             bool& aEqualsFound);
   static bool ParseAttributes(nsDependentCString& aCookieHeader,
-                              nsCookieAttributes& aCookieAttributes,
-                              bool& aDiscard);
+                              nsCookieAttributes& aCookie);
   bool RequireThirdPartyCheck();
   static bool CheckDomain(nsCookieAttributes& aCookie, nsIURI* aHostURI,
                           const nsCString& aBaseDomain, bool aRequireHostMatch);
diff --git a/netwerk/test/TestCookie.cpp b/netwerk/test/TestCookie.cpp
index 2129e26ef64e..7c838a4a1c6c 100644
--- a/netwerk/test/TestCookie.cpp
+++ b/netwerk/test/TestCookie.cpp
@@ -620,7 +620,7 @@ TEST(TestCookie, TestCookieMain)
              nullptr);
   GetACookie(cookieService, "http://parser.test/", nullptr, cookie);
   EXPECT_TRUE(CheckResult(cookie.get(), MUST_CONTAIN, R"(test="fubar! = foo)"));
-  EXPECT_TRUE(CheckResult(cookie.get(), MUST_NOT_CONTAIN, "five"));
+  EXPECT_TRUE(CheckResult(cookie.get(), MUST_CONTAIN, "five"));
   SetACookie(cookieService, "http://parser.test/", nullptr,
              "test=kill; domain=.parser.test; max-age=0 \n five; max-age=0",
              nullptr);
@@ -632,13 +632,13 @@ TEST(TestCookie, TestCookieMain)
   // cookies to overwrite it
   SetACookie(cookieService, "http://parser.test/", nullptr, "six", nullptr);
   GetACookie(cookieService, "http://parser.test/", nullptr, cookie);
-  EXPECT_TRUE(CheckResult(cookie.get(), MUST_BE_NULL));
+  EXPECT_TRUE(CheckResult(cookie.get(), MUST_EQUAL, "six"));
   SetACookie(cookieService, "http://parser.test/", nullptr, "seven", nullptr);
   GetACookie(cookieService, "http://parser.test/", nullptr, cookie);
-  EXPECT_TRUE(CheckResult(cookie.get(), MUST_BE_NULL));
+  EXPECT_TRUE(CheckResult(cookie.get(), MUST_EQUAL, "seven"));
   SetACookie(cookieService, "http://parser.test/", nullptr, " =eight", nullptr);
   GetACookie(cookieService, "http://parser.test/", nullptr, cookie);
-  EXPECT_TRUE(CheckResult(cookie.get(), MUST_BE_NULL));
+  EXPECT_TRUE(CheckResult(cookie.get(), MUST_EQUAL, "eight"));
   SetACookie(cookieService, "http://parser.test/", nullptr, "test=six",
              nullptr);
   GetACookie(cookieService, "http://parser.test/", nullptr, cookie);
diff --git a/testing/web-platform/meta/cookies/http-state/chromium-tests.html.ini b/testing/web-platform/meta/cookies/http-state/chromium-tests.html.ini
index 2140bfe1f36e..8bc56f0d4f7f 100644
--- a/testing/web-platform/meta/cookies/http-state/chromium-tests.html.ini
+++ b/testing/web-platform/meta/cookies/http-state/chromium-tests.html.ini
@@ -1,7 +1,19 @@
 [chromium-tests.html]
+  [chromium0009 - chromium0009]
+    expected: FAIL
+
   [chromium0006 - chromium0006]
     expected: FAIL
 
+  [chromium0012 - chromium0012]
+    expected: FAIL
+
+  [disabled-chromium0022 - disabled-chromium0022]
+    expected: FAIL
+
+  [chromium0010 - chromium0010]
+    expected: FAIL
+
   [chromium0007 - chromium0007]
     expected: FAIL
 
diff --git a/testing/web-platform/meta/cookies/http-state/general-tests.html.ini b/testing/web-platform/meta/cookies/http-state/general-tests.html.ini
index 6cc93211e20b..b5a16e51a642 100644
--- a/testing/web-platform/meta/cookies/http-state/general-tests.html.ini
+++ b/testing/web-platform/meta/cookies/http-state/general-tests.html.ini
@@ -1,4 +1,18 @@
 [general-tests.html]
+  [0021 - Ignore cookie without key in all 'Set-Cookie'.]
+    expected: FAIL
+
+  [0023 - Ignore cookies without '=' in all 'Set-Cookie'.]
+    expected: FAIL
+
+  [0026 - Ignore malformed cookies in all 'Set-Cookie' v2.]
+    expected: FAIL
+
+  [0027 - Ignore malformed cookies in all 'Set-Cookie' v3.]
+    expected: FAIL
+
   [0028 - [INVALID EXPECTATION\] Ignore malformed cookies in all 'Set-Cookie' v4.]
     expected: FAIL
 
+  [0004 - Ignore cookie without key.]
+    expected: FAIL
diff --git a/testing/web-platform/meta/cookies/http-state/name-tests.html.ini b/testing/web-platform/meta/cookies/http-state/name-tests.html.ini
new file mode 100644
index 000000000000..2c35daaca72d
--- /dev/null
+++ b/testing/web-platform/meta/cookies/http-state/name-tests.html.ini
@@ -0,0 +1,21 @@
+[name-tests.html]
+  [name0025 - name0025]
+    expected: FAIL
+
+  [name0023 - name0023]
+    expected: FAIL
+
+  [name0032 - name0032]
+    expected: FAIL
+
+  [name0031 - name0031]
+    expected: FAIL
+
+  [name0033 - name0033]
+    expected: FAIL
+
+  [name0028 - name0028]
+    expected: FAIL
+
+  [name0017 - name0017]
+    expected: FAIL
diff --git a/toolkit/components/thumbnails/test/thumbnails_background.sjs b/toolkit/components/thumbnails/test/thumbnails_background.sjs
index 5ec635005833..f1cce96a0edc 100644
--- a/toolkit/components/thumbnails/test/thumbnails_background.sjs
+++ b/toolkit/components/thumbnails/test/thumbnails_background.sjs
@@ -19,13 +19,13 @@ function handleRequest(req, resp) {
 
   let setCookieScript = "";
   if (opts.setRedCookie) {
-    resp.setHeader("Set-Cookie", "red=1", false);
-    setCookieScript = '<script>document.cookie="red=1";</script>';
+    resp.setHeader("Set-Cookie", "red", false);
+    setCookieScript = '<script>document.cookie="red";</script>';
   }
 
   if (opts.setGreenCookie) {
-    resp.setHeader("Set-Cookie", "green=1", false);
-    setCookieScript = '<script>document.cookie="green=1";</script>';
+    resp.setHeader("Set-Cookie", "green", false);
+    setCookieScript = '<script>document.cookie="green";</script>';
   }
 
   if (opts.iframe) {
@@ -43,14 +43,14 @@ function handleRequest(req, resp) {
   }
 
   if (req.hasHeader("Cookie") &&
-      req.getHeader("Cookie").split(";").indexOf("red=1") >= 0) {
+      req.getHeader("Cookie").split(";").indexOf("red") >= 0) {
     resp.write('<html style="background: #f00;">' + setCookieScript + '</html>');
     resp.finish();
     return;
   }
 
   if (req.hasHeader("Cookie") &&
-      req.getHeader("Cookie").split(";").indexOf("green=1") >= 0) {
+      req.getHeader("Cookie").split(";").indexOf("green") >= 0) {
     resp.write('<html style="background: #0f0;">' + setCookieScript + '</html>');
     resp.finish();
     return;