diff --git a/Dockerfile b/Dockerfile
index 3a434b70..165f8a02 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
 FROM keking/kkfileview-base:5.0.0
 ADD server/target/kkFileView-*.tar.gz /opt/
-ENV KKFILEVIEW_BIN_FOLDER=/opt/kkFileView-5.0.1/bin
-ENTRYPOINT ["java","-Dfile.encoding=UTF-8","-Dspring.config.location=/opt/kkFileView-5.0.1/config/application.properties","-jar","/opt/kkFileView-5.0.1/bin/kkFileView-5.0.1.jar"]
+ENV KKFILEVIEW_BIN_FOLDER=/opt/kkFileView-5.0.2/bin
+ENTRYPOINT ["java","-Dfile.encoding=UTF-8","-Dspring.config.location=/opt/kkFileView-5.0.2/config/application.properties","-jar","/opt/kkFileView-5.0.2/bin/kkFileView-5.0.2.jar"]
diff --git a/README.cn.md b/README.cn.md
index 8f7d21e8..d2332a4e 100644
--- a/README.cn.md
+++ b/README.cn.md
@@ -149,6 +149,21 @@ pdf预览模式预览效果如下
 
 ### 历史更新记录
 
+#### > 2026年08月14日，v5.0.2 补丁版本发布 ：
+
+#### 安全修复
+1. 将不可信 HTML 预览放入不具有同源权限的 iframe 沙箱，并默认禁用其中的 JavaScript，避免被预览文件在 kkFileView 应用源中执行脚本（GHSA-9wcf-jxxf-w2g2）
+2. 默认禁用演示文件删除接口，将接口改为 POST，并要求显式配置密码后进行精确比较（GHSA-f3qx-xrwc-5428）
+
+#### 修复问题
+1. 在 PDF 转图服务启动时刷新 ImageIO 插件，使 JBIG2 等嵌套 JAR 图像读取器能够被发现，避免 PDF 转图片预览时部分图像丢失
+
+#### 升级说明
+1. 建议所有 v5.0.1 及更早版本用户尽快升级到 v5.0.2
+2. 本版本继续要求 JDK 21 及以上，现有 v5.0.1 配置可直接沿用
+3. 文件删除功能现在默认禁用；如确需启用，请通过 `KK_DELETE_PASSWORD` 或外部 `delete.password` 设置独立强密码，并将 `/deleteFile` 调用改为 POST
+4. `kk.scriptjs` 现在默认为 `false`；显式启用后，脚本仍只会在隔离的 iframe 沙箱内运行
+
 #### > 2026年07月13日，v5.0.1 补丁版本发布 ：
 
 #### 安全修复
diff --git a/README.md b/README.md
index f4d93e23..1284f36d 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,21 @@ URL：[https://file.kkview.cn](https://file.kkview.cn)
 
 ## Change History
 
+### Version 5.0.2 (August 14, 2026)
+
+#### Security Fixes
+1. Sandboxed untrusted HTML previews in an opaque-origin iframe and disabled embedded JavaScript by default, preventing previewed files from executing in the kkFileView application origin (GHSA-9wcf-jxxf-w2g2)
+2. Disabled the demo file deletion endpoint by default, changed it to POST, and required an explicitly configured password with exact comparison (GHSA-f3qx-xrwc-5428)
+
+#### Fixes
+1. Refreshed ImageIO plugins when PDF conversion starts so nested JAR providers such as the JBIG2 reader are discovered, preventing images from disappearing in PDF-to-image previews
+
+#### Upgrade Notes
+1. All users running v5.0.1 or earlier are strongly encouraged to upgrade to v5.0.2
+2. JDK 21 or higher remains required, and existing v5.0.1 configuration can be reused
+3. File deletion is now disabled unless `KK_DELETE_PASSWORD` or an external `delete.password` is set to an independent strong password; integrations must call `/deleteFile` with POST
+4. `kk.scriptjs` now defaults to `false`; when explicitly enabled, scripts still run only inside the isolated iframe sandbox
+
 ### Version 5.0.1 (July 13, 2026)
 
 #### Security Fixes
diff --git a/pom.xml b/pom.xml
index a33c3b7d..7c46e332 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>cn.keking</groupId>
     <artifactId>kkFileView-parent</artifactId>
-    <version>5.0.1</version>
+    <version>5.0.2</version>
 
     <properties>
         <!-- ========== Java 和编译配置 ========== -->
diff --git a/server/pom.xml b/server/pom.xml
index c60cb36d..0baafae8 100644
--- a/server/pom.xml
+++ b/server/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <artifactId>kkFileView-parent</artifactId>
         <groupId>cn.keking</groupId>
-        <version>5.0.1</version>
+        <version>5.0.2</version>
     </parent>
 
     <artifactId>kkFileView</artifactId>
diff --git a/server/src/main/resources/web/main/record.ftl b/server/src/main/resources/web/main/record.ftl
index e1e9455f..149d7ded 100644
--- a/server/src/main/resources/web/main/record.ftl
+++ b/server/src/main/resources/web/main/record.ftl
@@ -41,10 +41,10 @@
                     你可以先看最新版本的升级重点，再顺着时间轴继续了解历史版本细节。
                 </p>
                 <div class="release-badge-row">
-                    <span class="tag highlight">最新版本 v5.0.1</span>
-                    <span class="tag brand">发布日期 2026-07-13</span>
+                    <span class="tag highlight">最新版本 v5.0.2</span>
+                    <span class="tag brand">发布日期 2026-08-14</span>
                     <span class="tag warn">JDK 21+ 强制要求</span>
-                    <span class="tag">安全补丁 / PDF、Redis、XLSX 修复</span>
+                    <span class="tag">安全补丁 / HTML、文件删除、PDF 转图修复</span>
                 </div>
             </div>
         </section>
@@ -52,11 +52,50 @@
         <section class="release-section">
             <div class="timeline-year">2026</div>
             <div class="timeline-list">
+                <article class="release-card">
+                    <h3>v5.0.2</h3>
+                    <div class="release-meta">
+                        <span class="tag brand">2026-08-14</span>
+                        <span class="tag highlight">最新稳定版本</span>
+                        <span class="tag warn">建议尽快升级</span>
+                    </div>
+                    <div class="release-columns">
+                        <div class="release-group">
+                            <h4>安全修复</h4>
+                            <ul class="release-list">
+                                <li>HTML 文件改在不具有同源权限的 iframe 沙箱中预览，并默认禁用 JavaScript。</li>
+                                <li>文件删除接口默认禁用，改用 POST，并要求显式配置密码后进行精确比较。</li>
+                            </ul>
+                        </div>
+                        <div class="release-group">
+                            <h4>修复</h4>
+                            <ul class="release-list">
+                                <li>刷新 ImageIO 插件，修复 PDF 转图片预览时 JBIG2 等图像读取器未被发现导致的图片丢失。</li>
+                            </ul>
+                        </div>
+                        <div class="release-group">
+                            <h4>配置调整</h4>
+                            <ul class="release-list">
+                                <li><code>delete.password</code> 默认改为 <code>false</code>。</li>
+                                <li><code>kk.scriptjs</code> 默认改为 <code>false</code>，启用后仍保持沙箱隔离。</li>
+                            </ul>
+                        </div>
+                        <div class="release-group">
+                            <h4>升级重点</h4>
+                            <ul class="release-list">
+                                <li>建议所有 v5.0.1 及更早版本用户尽快升级。</li>
+                                <li>继续要求 JDK 21 及以上，现有配置可直接沿用。</li>
+                                <li>如需删除功能，请配置独立强密码，并将调用方式改为 POST。</li>
+                            </ul>
+                        </div>
+                    </div>
+                </article>
+
                 <article class="release-card">
                     <h3>v5.0.1</h3>
                     <div class="release-meta">
                         <span class="tag brand">2026-07-13</span>
-                        <span class="tag highlight">最新稳定版本</span>
+                        <span class="tag">上一补丁版本</span>
                         <span class="tag warn">建议尽快升级</span>
                     </div>
                     <div class="release-columns">