There is a XML external entity (XXE) vulnerability in halo v1.1.3, The function of importing other blogs in the background(/api/admin/migrations/wordpress) needs to parse the xml file, but it is not used for security defense, This vulnerability can detect the intranet, read files, enable ddos attacks, etc. exp:https://github.com/halo-dev/halo/issues/423

A Server-Side Freemarker template injection vulnerability in halo CMS v1.1.3 In the Edit Theme File function. The ftl file can be edited. This is the Freemarker template file. This file can cause arbitrary code execution when it is rendered in the background. exp: <#assign test="freemarker.template.utility.Execute"?new()> ${test("touch /tmp/freemarkerPwned")}

An Arbitrary file writing vulnerability in halo v1.1.3. In an interface to write files in the background, a directory traversal check is performed on the input path parameter, but the startsWith function can be used to bypass it.

An issue was discovered in halo V1.1.3. A Zip Slip Directory Traversal Vulnerability in the backend,the attacker can overwrite some files, such as ftl files, .bashrc files in the user directory, and finally get the permissions of the operating system.

Halo V1.1.3 is affected by: Arbitrary File reading. In an interface that reads files in halo v1.1.3, a directory traversal check is performed on the input path parameter, but the startsWith function can be used to bypass it.

Halo blog 1.2.0 allows users to submit comments on blog posts via /api/content/posts/comments. The javascript code supplied by the attacker will then execute in the victim user's browser.

Halo before 1.2.0-beta.1 allows Server Side Template Injection (SSTI) because TemplateClassResolver.SAFER_RESOLVER is not used in the FreeMarker configuration.

Halo 1.1.0 has XSS via a crafted authorUrl in JSON data to api/content/posts/comments.

ruibaby Halo 0.0.2 has stored XSS via the commentAuthor field to FrontCommentController.java.

ruibaby Halo 0.0.2 has stored XSS via the loginName and loginPwd parameters in a failed login attempt to AdminController.java.