Index: general/genlib/js78.xml
===================================================================
--- general/genlib/js78.xml	(revision 08093b3c49089db91a863383bdd6b749c2c6aad2)
+++ general/genlib/js78.xml	(revision 1a54b92b572c428ef8151dc8f38996c8472513b3)
@@ -14,6 +14,6 @@
   <!ENTITY js78-download-http "&mozilla-http;/firefox/releases/&JS78-version;esr/source/firefox-&JS78-version;esr.source.tar.xz">
   <!ENTITY js78-download-ftp  " ">
-  <!ENTITY js78-md5sum        "88c2a5dbee2b6a843258599df3566630">
-  <!ENTITY js78-size          "325 MB">
+  <!ENTITY js78-md5sum        "453c90444bad8702fd08b71213ab2cbc">
+  <!ENTITY js78-size          "316 MB">
   <!ENTITY js78-buildsize     "3.0 GB (36 MB installed after removing 34MB static lib)">
   <!ENTITY js78-time          "2.5 SBU (with parallelism=4)">
Index: introduction/welcome/changelog.xml
===================================================================
--- introduction/welcome/changelog.xml	(revision 08093b3c49089db91a863383bdd6b749c2c6aad2)
+++ introduction/welcome/changelog.xml	(revision 1a54b92b572c428ef8151dc8f38996c8472513b3)
@@ -43,4 +43,16 @@
     -->
     <listitem>
+      <para>October 5th, 2021</para>
+      <itemizedlist>
+        <listitem>
+          <para>[ken] - Update to JS-78.15.0 (js/src unchanged since 78.13.0),
+          firefox-legacy-78.15.0  (Security Update) and firefox-91.2.0esr
+          (Security Update). Fixes
+          <ulink url="&blfs-ticket-root;15638">#15638</ulink>.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
+    <listitem>
       <para>October 1st, 2021</para>
       <itemizedlist>
Index: packages.ent
===================================================================
--- packages.ent	(revision 08093b3c49089db91a863383bdd6b749c2c6aad2)
+++ packages.ent	(revision 1a54b92b572c428ef8151dc8f38996c8472513b3)
@@ -121,5 +121,5 @@
 <!-- for JS78 see firefox -->
 <!-- temporary, until JS91 is approved for gnome -->
-<!ENTITY JS78-version                 "78.14.0">
+<!ENTITY JS78-version                 "78.15.0">
 <!ENTITY json-c-version               "0.15">
 <!ENTITY json-glib-version            "1.6.6">
@@ -932,5 +932,5 @@
 <!ENTITY falkon-version               "&falkon-major-version;.&falkon-minor-version;">
 <!-- for firefox-legacy-version use JS78-version -->
-<!ENTITY firefox-version              "91.1.0">
+<!ENTITY firefox-version              "91.2.0">
 <!ENTITY flashplayer-version          "27.0.0.187">
 <!ENTITY qupzilla-version             "2.2.6">
Index: xsoft/graphweb/firefox-legacy.xml
===================================================================
--- xsoft/graphweb/firefox-legacy.xml	(revision 08093b3c49089db91a863383bdd6b749c2c6aad2)
+++ xsoft/graphweb/firefox-legacy.xml	(revision 1a54b92b572c428ef8151dc8f38996c8472513b3)
@@ -7,6 +7,6 @@
   <!ENTITY firefox-download-http "&mozilla-http;/firefox/releases/&JS78-version;esr/source/firefox-&JS78-version;esr.source.tar.xz">
   <!ENTITY firefox-download-ftp  " ">
-  <!ENTITY firefox-md5sum        "88c2a5dbee2b6a843258599df3566630">
-  <!ENTITY firefox-size          "325 MB">
+  <!ENTITY firefox-md5sum        "453c90444bad8702fd08b71213ab2cbc">
+  <!ENTITY firefox-size          "316 MB">
   <!-- NB with stylo, much of the build uses rust, and therefore cargo files.
     But the extra cached cargo files, if any, seem to be minimal -->
Index: xsoft/graphweb/firefox.xml
===================================================================
--- xsoft/graphweb/firefox.xml	(revision 08093b3c49089db91a863383bdd6b749c2c6aad2)
+++ xsoft/graphweb/firefox.xml	(revision 1a54b92b572c428ef8151dc8f38996c8472513b3)
@@ -7,5 +7,5 @@
   <!ENTITY firefox-download-http "&mozilla-http;/firefox/releases/&firefox-version;esr/source/firefox-&firefox-version;esr.source.tar.xz">
   <!ENTITY firefox-download-ftp  " ">
-  <!ENTITY firefox-md5sum        "61350e551a90d199ca4a1f93e69092ee">
+  <!ENTITY firefox-md5sum        "cf84537ecd1bf35918c8b641450b15cb">
   <!ENTITY firefox-size          "364 MB">
   <!-- NB with stylo, much of the build uses rust, and therefore cargo files.
@@ -15,5 +15,5 @@
    most practical way to get a timing on a machine with more cores, if taking
    cores offline is not practical. If in doubt, round up -->
-  <!ENTITY firefox-time          "29 SBU (on a typical 4-core machine) without tests">
+  <!ENTITY firefox-time          "31 SBU (on a typical 4-core machine) without tests">
 ]>
 
