In admin/write-post.php in Typecho through 1.1, one can log in to the background page, write a new article, and add payload in the article content, resulting in XSS via index.php/action/contents-post-edit.

Typecho V1.1 allows remote attackers to send shell commands via base64-encoded serialized data, as demonstrated by SSRF.

Open redirect vulnerability in typecho 1.1-17.10.30-release via the referer parameter to Login.php.

typecho 1.1/17.10.30 was discovered to contain a remote code execution (RCE) vulnerability via install.php.

Cross Site Scripting vulnerability found in Typecho v.1.2.0 allows a remote attacker to execute arbitrary code via an arbitrarily supplied URL parameter.

Cross Site Scripting vulnerability found in Typecho v.1.2.0 allows a remote attacker to execute arbitrary code viathe Post Editorparameter.

Cross Site Scripting vulnerability found in Typecho v.1.2.0 allows a remote attacker to execute arbitrary code via the Comment Manager /admin/manage-comments.php component.

A stored cross-site scripting (XSS) vulnerability in Typecho v1.2.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the url parameter at /index.php/archives/1/comment.

A File Upload vulnerability in typecho v.1.2.1 allows a remote attacker to execute arbitrary code via the upload and options-general parameters in index.php.

Typecho v1.2.1 was discovered to be vulnerable to an XML Quadratic Blowup attack via the component /index.php/action/xmlrpc.

A vulnerability classified as problematic has been found in Typecho 1.2.1. Affected is an unknown function of the file /admin/options-theme.php of the component Logo Handler. The manipulation leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-247248. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability classified as problematic was found in Typecho 1.2.1. Affected by this vulnerability is an unknown functionality of the file /admin/manage-pages.php of the component Page Handler. The manipulation leads to backdoor. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-247249 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability, which was classified as problematic, has been found in Typecho 1.2.1. Affected by this issue is some unknown functionality of the file /admin/manage-users.php. The manipulation of the argument page leads to information disclosure. The exploit has been disclosed to the public and may be used. VDB-247250 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Typecho v1.3.0 was discovered to contain a Client IP Spoofing vulnerability, which allows attackers to falsify their IP addresses by specifying an arbitrary IP as value of X-Forwarded-For or Client-Ip headers while performing HTTP requests.

Typecho v1.3.0 was discovered to contain a race condition vulnerability in the post commenting function. This vulnerability allows attackers to post several comments before the spam protection checks if the comments are posted too frequently.

A cross-site scripting (XSS) vulnerability in Typecho v1.2.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into Name parameter under a comment for an Article.

Clickjacking vulnerability in typecho v1.2.1.