diff --git a/manifest b/manifest
index 105fdc6b4b..ddd60a6df8 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fix\stest\sscript\sliteral.test\sso\sthat\sit\sworks\swith\sSQLITE_OMIT_ALTER_TABLE\sbuilds.
-D 2024-01-22T14:01:07.189
+C The\s-DSQLITE_JSON_BLOB_INPUT_BUG_COMPATIBLE\scompile-time\soption\scauses\sblob\ninputs\sto\sJSON\sfunctions\sthat\sare\snot\sJSONB\sto\sbe\sprocessed\sas\sif\sthey\nwhere\stext,\simmulating\shistorical\sbugging\sbehavior\swhich\ssome\sapplications\nhave\scome\sto\srely\supon.\s\sSee\n[forum:/forumpost/012136abd5292b8d|forum\sthread\s012136abd5292b8d]\sfor\ndiscussion.
+D 2024-01-22T14:16:10.354
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -698,7 +698,7 @@ F src/hash.h 3340ab6e1d13e725571d7cee6d3e3135f0779a7d8e76a9ce0a85971fa3953c51
 F src/hwtime.h f9c2dfb84dce7acf95ce6d289e46f5f9d3d1afd328e53da8f8e9008e3b3caae6
 F src/in-operator.md 10cd8f4bcd225a32518407c2fb2484089112fd71
 F src/insert.c 3f0a94082d978bbdd33c38fefea15346c6c6bffb70bc645a71dc0f1f87dd3276
-F src/json.c 5405e50cf0d7aeae12ac5b46e0fc9b3757b3b9cb4885f1a73ec7afeac99b9759
+F src/json.c 99f2825b44327811bdf47808e57077388b83bcc6a253c1269d13fd1b3237138d
 F src/legacy.c d7874bc885906868cd51e6c2156698f2754f02d9eee1bae2d687323c3ca8e5aa
 F src/loadext.c 7432c944ff197046d67a1207790a1b13eec4548c85a9457eb0896bb3641dfb36
 F src/main.c 438b95162acfa17b7d218f586f5bde11d6ae82bcf030c9611fc537556870ad6b
@@ -2159,9 +2159,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 249048b0cbc37058c229a785182e07b46029584aff9c385269b0b93503153476
-Q +b57327be4be9638f5ee834a6c9e06135aaef9e499516f8b53f927ffe81033f61
-R 30b53374dcbd0df72ff4a36d2f8af72e
-U dan
-Z 80e756b96db0b6ae94203f53b2e0b98b
+P 4dc00f577632c7b13135505007804d42a12f81a9ebd58d4c380727256b054b7e
+R 59af26cba445671768ccc033868954ad
+U drh
+Z 9f8b0dd9fdc4264b889c936f6659e28d
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index cbd31ca380..25bb88a0e7 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-4dc00f577632c7b13135505007804d42a12f81a9ebd58d4c380727256b054b7e
\ No newline at end of file
+65572223583d43e1d61ec029641f9d3ff340e68ecfba8342c8d1b0a91a680f2a
\ No newline at end of file
diff --git a/src/json.c b/src/json.c
index d33692466b..b9a88822e0 100644
--- a/src/json.c
+++ b/src/json.c
@@ -3217,6 +3217,38 @@ jsonInsertIntoBlob_patherror:
   return;
 }
 
+/*
+** If pArg is a blob that seems like a JSONB blob, then initialize
+** p to point to that JSONB and return TRUE.  If pArg does not seem like
+** a JSONB blob, then return FALSE;
+**
+** This routine is only called if it is already known that pArg is a
+** blob.  The only open question is whether or not the blob appears
+** to be a JSONB blob.
+*/
+static int jsonArgIsJsonb(sqlite3_value *pArg, JsonParse *p){
+  u32 n, sz = 0;
+  p->aBlob = (u8*)sqlite3_value_blob(pArg);
+  p->nBlob = (u32)sqlite3_value_bytes(pArg);
+  if( p->nBlob==0 ){
+    p->aBlob = 0;
+    return 0;
+  }
+  if( NEVER(p->aBlob==0) ){
+    return 0;
+  }
+  if( (p->aBlob[0] & 0x0f)<=JSONB_OBJECT
+   && (n = jsonbPayloadSize(p, 0, &sz))>0
+   && sz+n==p->nBlob
+   && ((p->aBlob[0] & 0x0f)>JSONB_FALSE || sz==0)
+  ){
+    return 1;
+  }
+  p->aBlob = 0;
+  p->nBlob = 0;
+  return 0;
+}
+
 /*
 ** Generate a JsonParse object, containing valid JSONB in aBlob and nBlob,
 ** from the SQL function argument pArg.  Return a pointer to the new
@@ -3273,29 +3305,26 @@ rebuild_from_cache:
     return p;
   }
   if( eType==SQLITE_BLOB ){
-    u32 n, sz = 0;
-    p->aBlob = (u8*)sqlite3_value_blob(pArg);
-    p->nBlob = (u32)sqlite3_value_bytes(pArg);
-    if( p->nBlob==0 ){
-      goto json_pfa_malformed;
+    if( jsonArgIsJsonb(pArg,p) ){
+      if( (flgs & JSON_EDITABLE)!=0 && jsonBlobMakeEditable(p, 0)==0 ){
+        goto json_pfa_oom;
+      }
+      return p;
     }
-    if( NEVER(p->aBlob==0) ){
-      goto json_pfa_oom;
-    }
-    if( (p->aBlob[0] & 0x0f)>JSONB_OBJECT ){
-      goto json_pfa_malformed;
-    }
-    n = jsonbPayloadSize(p, 0, &sz);
-    if( n==0 
-     || sz+n!=p->nBlob
-     || ((p->aBlob[0] & 0x0f)<=JSONB_FALSE && sz>0)
-    ){
-      goto json_pfa_malformed;
-    }
-    if( (flgs & JSON_EDITABLE)!=0 && jsonBlobMakeEditable(p, 0)==0 ){
-      goto json_pfa_oom;
-    }
-    return p;
+#if defined(SQLITE_JSON_BLOB_INPUT_BUG_COMPATIBLE)
+    /* If the input is a BLOB that is not JSONB, fall through into trying
+    ** to process that BLOB as if it where text.  This goes against all
+    ** historical documentation about how the SQLite JSON functions are 
+    ** suppose to work.  Nevertheless, many SQLite implementations prior to
+    ** version 3.45.0 contained a bug such that they did behave this way
+    ** and some applications came to depend upon this buggy behavior.  The
+    ** SQLITE_JSON_BLOB_INPUT_BUG_COMPATIBLE compile-time option provides
+    ** a mechanism for those applications to continue working even after
+    ** the bug was fixed.  See
+    ** https://sqlite.org/forum/forumpost/012136abd5292b8d */
+#else
+    goto json_pfa_malformed;
+#endif
   }
   p->zJson = (char*)sqlite3_value_text(pArg);
   p->nJson = sqlite3_value_bytes(pArg);