diff --git a/CHANGELOG.md b/CHANGELOG.md
index 149b3ff7c..29bf1764b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ All notable changes to Gogs are documented in this file.
 ### Added
 
 - An unlisted option is added when create or migrate a repository. Unlisted repositories are public but not being listed for users without direct access in the UI. [#5733](https://github.com/gogs/gogs/issues/5733)
+- Add new configuration option `[git.timeout] DIFF` for customizing operation timeout of `git diff`. [#6315](https://github.com/gogs/gogs/issues/6315)
 
 ### Changed
 
@@ -16,13 +17,7 @@ All notable changes to Gogs are documented in this file.
 
 ### Fixed
 
-- _Regression:_ Pages are correctly rendered when requesting `?go-get=1` for subdirectories. [#6314](https://github.com/gogs/gogs/issues/6314)
-- _Regression:_ Submodule with a relative path is linked correctly. [#6319](https://github.com/gogs/gogs/issues/6319)
-- Backup can be processed when `--target` is specified on Windows. [#6339](https://github.com/gogs/gogs/issues/6339)
-- Commit message contains keywords look like an issue reference no longer fails the push entirely. [#6289](https://github.com/gogs/gogs/issues/6289)
-- _Regression:_ When running Gogs on Windows, push commits no longer fail on a daily basis with the error "pre-receive hook declined". [#6316](https://github.com/gogs/gogs/issues/6316)
-- Auto-linked commit SHAs now have correct links. [#6300](https://github.com/gogs/gogs/issues/6300)
-- Git LFS client (with version >= 2.5.0) wasn't able to upload files with known format (e.g. PNG, JPEG), and the server is expecting the HTTP Header `Content-Type` to be `application/octet-stream`. The server now tells the LFS client to always use `Content-Type: application/octet-stream` when upload files.
+- Add `X-Frame-Options` header to prevent Clickjacking. [#6409](https://github.com/gogs/gogs/issues/6409) 
 
 ### Removed
 
@@ -31,7 +26,6 @@ All notable changes to Gogs are documented in this file.
 - Configuration section `[service]` is no longer used.
 - Configuration option `APP_NAME` is no longer used.
 - Configuration option `[security] REVERSE_PROXY_AUTHENTICATION_USER` is no longer used.
-- Configuration option `[database] PASSWD` is no longer used.
 - Configuration option `[auth] ACTIVE_CODE_LIVE_MINUTES` is no longer used.
 - Configuration option `[auth] RESET_PASSWD_CODE_LIVE_MINUTES` is no longer used.
 - Configuration option `[auth] ENABLE_CAPTCHA` is no longer used.
@@ -44,6 +38,23 @@ All notable changes to Gogs are documented in this file.
 - Configuration option `[database] DB_TYPE` is no longer used.
 - Configuration option `[database] PASSWD` is no longer used.
 
+## 0.12.3
+
+### Fixed
+
+- _Regression:_ When running Gogs on Windows, push commits no longer fail on a daily basis with the error "pre-receive hook declined". [#6316](https://github.com/gogs/gogs/issues/6316)
+- Auto-linked commit SHAs now have correct links. [#6300](https://github.com/gogs/gogs/issues/6300)
+- Git LFS client (with version >= 2.5.0) wasn't able to upload files with known format (e.g. PNG, JPEG), and the server is expecting the HTTP Header `Content-Type` to be `application/octet-stream`. The server now tells the LFS client to always use `Content-Type: application/octet-stream` when upload files.
+
+## 0.12.2
+
+### Fixed
+
+- _Regression:_ Pages are correctly rendered when requesting `?go-get=1` for subdirectories. [#6314](https://github.com/gogs/gogs/issues/6314)
+- _Regression:_ Submodule with a relative path is linked correctly. [#6319](https://github.com/gogs/gogs/issues/6319)
+- Backup can be processed when `--target` is specified on Windows. [#6339](https://github.com/gogs/gogs/issues/6339)
+- Commit message contains keywords look like an issue reference no longer fails the push entirely. [#6289](https://github.com/gogs/gogs/issues/6289)
+
 ## 0.12.1
 
 ### Fixed
@@ -81,6 +92,7 @@ All notable changes to Gogs are documented in this file.
 - Configuration section `[service]` is deprecated and will end support in 0.13.0, please start using `[auth]`.
 - Configuration option `[auth] ACTIVE_CODE_LIVE_MINUTES` is deprecated and will end support in 0.13.0, please start using `[auth] ACTIVATE_CODE_LIVES`.
 - Configuration option `[auth] RESET_PASSWD_CODE_LIVE_MINUTES` is deprecated and will end support in 0.13.0, please start using `[auth] RESET_PASSWORD_CODE_LIVES`.
+- Configuration option `[auth] REGISTER_EMAIL_CONFIRM` is deprecated and will end support in 0.13.0, please start using `[auth] REQUIRE_EMAIL_CONFIRMATION`.
 - Configuration option `[auth] ENABLE_CAPTCHA` is deprecated and will end support in 0.13.0, please start using `[auth] ENABLE_REGISTRATION_CAPTCHA`.
 - Configuration option `[auth] ENABLE_NOTIFY_MAIL` is deprecated and will end support in 0.13.0, please start using `[user] ENABLE_EMAIL_NOTIFICATION`.
 - Configuration option `[session] GC_INTERVAL_TIME` is deprecated and will end support in 0.13.0, please start using `[session] GC_INTERVAL`.
diff --git a/internal/context/context.go b/internal/context/context.go
index 2971700b4..9af98ebcd 100644
--- a/internal/context/context.go
+++ b/internal/context/context.go
@@ -290,6 +290,7 @@ func Contexter() macaron.Handler {
 		// 🚨 SECURITY: Prevent MIME type sniffing in some browsers,
 		// see https://github.com/gogs/gogs/issues/5397 for details.
 		c.Header().Set("X-Content-Type-Options", "nosniff")
+		c.Header().Set("X-Frame-Options", "DENY")
 
 		ctx.Map(c)
 	}