diff --git a/Modules/Sources/WordPressKitObjC/PostServiceRemoteREST.m b/Modules/Sources/WordPressKitObjC/PostServiceRemoteREST.m
index fbc02baeba2c..b4d6f670fe9f 100644
--- a/Modules/Sources/WordPressKitObjC/PostServiceRemoteREST.m
+++ b/Modules/Sources/WordPressKitObjC/PostServiceRemoteREST.m
@@ -4,6 +4,7 @@
 #import "RemotePostTerm.h"
 #import "FilePart.h"
 #import "NSString+Helpers.h"
+#import "NSString+WPKitNumericValueHack.h"
 
 @import WordPressShared;
 @import WordPressKitModels;
@@ -396,7 +397,8 @@ - (RemotePost *)remotePostFromJSONDictionary:(NSDictionary *)jsonPost {
 + (RemotePost *)remotePostFromJSONDictionary:(NSDictionary *)jsonPost {
     RemotePost *post = [RemotePost new];
     post.postID = jsonPost[@"ID"];
-    post.siteID = jsonPost[@"site_ID"];
+    // Create and update responses return site_ID as a string, while read responses return a number.
+    post.siteID = [jsonPost[@"site_ID"] wpkit_numericValue];
     if (jsonPost[@"author"] != [NSNull null]) {
         NSDictionary *authorDictionary = jsonPost[@"author"];
         post.authorAvatarURL = authorDictionary[@"avatar_URL"];
diff --git a/RELEASE-NOTES.txt b/RELEASE-NOTES.txt
index 423368e006f3..8a2418247261 100644
--- a/RELEASE-NOTES.txt
+++ b/RELEASE-NOTES.txt
@@ -3,7 +3,7 @@
 * [*] [internal] In-app updates: guard the flexible update notice against double-posting when two update checks race [#25666]
 * [*] [build tooling] Add a String Catalog localization pipeline (plurals + build-free catalog generation) with a CI coverage gate [#25688]
 * [*] [internal] Stats widgets: migrate the site picker from SiriKit to App Intents [#25753]
-
+* [*] Share Extension: Fix a crash after uploading a post to WordPress.com [#25773]
 
 27.0
 -----
diff --git a/Tests/WordPressKitTests/WordPressKitTests/Tests/PostServiceRemoteRESTTests.m b/Tests/WordPressKitTests/WordPressKitTests/Tests/PostServiceRemoteRESTTests.m
index d6ed1b89a6f2..732af74622de 100644
--- a/Tests/WordPressKitTests/WordPressKitTests/Tests/PostServiceRemoteRESTTests.m
+++ b/Tests/WordPressKitTests/WordPressKitTests/Tests/PostServiceRemoteRESTTests.m
@@ -26,6 +26,22 @@ - (PostServiceRemoteREST*)service
     return [[PostServiceRemoteREST alloc] initWithWordPressComRestApi:api siteID:siteID];
 }
 
+#pragma mark - Mapping posts
+
+- (void)testThatRemotePostMappingConvertsStringSiteIDToNumber
+{
+    NSDictionary *jsonPost = @{
+        @"ID": @1147,
+        @"site_ID": @"237072388"
+    };
+
+    RemotePost *post = [PostServiceRemoteREST remotePostFromJSONDictionary:jsonPost];
+
+    XCTAssertEqualObjects(post.postID, @1147);
+    XCTAssertEqualObjects(post.siteID, @237072388);
+    XCTAssertTrue([post.siteID isKindOfClass:[NSNumber class]]);
+}
+
 #pragma mark - Getting posts by ID
 
 - (void)testThatGetPostWithIDWorks