emlog Arbitrary File Upload Vulnerability

Emlog is an open source website building system. emlog v2.6.1 and earlier exposes a REST API endpoint (/index.php?rest-api=upload) for media file uploads. The endpoint fails to implement proper validation of file types, extensions, and content, allowing authenticated attackers (with a valid API key or admin session cookie) to upload arbitrary files (including malicious PHP scripts) to the server. An attacker can obtain the API key either by gaining administrator access to enable the REST API setting, or via information disclosure vulnerabilities in the application. Once uploaded, the malicious PHP file can be executed to gain remote code execution (RCE) on the target server, leading to full server compromise.

Emlog: CSRF in Backend Upgrade Interface Leading to Arbitrary Remote SQL Execution and Arbitrary File Write

Emlog is an open source website building system. Prior to version 2.6.8, the backend upgrade interface accepts remote SQL and ZIP URLs via GET parameters. The server first downloads and executes the SQL file, then downloads the ZIP file and extracts it directly into the web root directory. This process does not validate a CSRF token. Therefore, an attacker only needs to trick an authenticated administrator into visiting a malicious link to achieve arbitrary SQL execution and arbitrary file write. This issue has been patched in version 2.6.8.

Emlog: Stored XSS in Comment Module via URI Scheme Validation Bypass

Emlog is an open source website building system. Prior to version 2.6.8, there is a stored cross-site scripting (XSS) vulnerability in emlog comment module via URI scheme validation bypass. This issue has been patched in version 2.6.8.

Emlog: Path Traversal in emUnZip() allows arbitrary file write leading to RCE

Emlog is an open source website building system. In versions 2.6.2 and prior, a path traversal vulnerability exists in the emUnZip() function (include/lib/common.php:793). When extracting ZIP archives (plugin/template uploads, backup imports), the function calls $zip->extractTo($path) without sanitizing ZIP entry names. An authenticated admin can upload a crafted ZIP containing entries with ../ sequences to write arbitrary files to the server filesystem, including PHP webshells, achieving Remote Code Execution (RCE). At time of publication, there are no publicly available patches.

Emlog: Local File Inclusion in plugin.php via unsanitized plugin parameter

Emlog is an open source website building system. In versions 2.6.2 and prior, a Local File Inclusion (LFI) vulnerability exists in admin/plugin.php at line 80. The $plugin parameter from the GET request is directly used in a require_once path without proper sanitization. If the CSRF token check can be bypassed (see potential bypass conditions), an attacker can include arbitrary PHP files from the server filesystem, leading to code execution. At time of publication, there are no publicly available patches.

Emlog: SQL Injection in tag_model::updateTagName() via unsanitized parameters

Emlog is an open source website building system. In versions 2.6.2 and prior, a SQL injection vulnerability exists in include/model/tag_model.php at line 168. The updateTagName() function directly interpolates user input into the SQL query string without using parameterized queries or proper escaping ($this->db->escape_string()), making it vulnerable to SQL injection attacks. At time of publication, there are no publicly available patches.

Emlog asynchronous media file deletion missing CSRF protection

Emlog is an open source website building system. In 2.6.6 and earlier, the delete_async action (asynchronous delete) lacks a call to LoginAuth::checkToken(), enabling CSRF attacks.

** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: The file upload in include/service/media.php verifies the file extension based on a list defined in include/lib/option.php. This whitelist prevents unrestricted uploads (e.g. PHP files). Therefore, the attack possibility is just of theoretical nature.

Emlog Pro 2.5.20 has an arbitrary file deletion vulnerability. This vulnerability stems from the admin/template.php component and the admin/plugin.php component. They fail to perform path verification and dangerous code filtering for deletion parameters, allowing attackers to exploit this feature for directory traversal.

Emlog Pro session verification code error due to clearing logic error

Emlog is an open source website building system. In version 2.5.23, Emlog Pro is vulnerable to a session verification code error due to a clearing logic error. This means the verification code could be reused anywhere an email verification code is required. This issue has been fixed in commit 1f726df.

Emlog Pro is vulnerable to stored XSS attack through HTML template injection

Emlog is an open source website building system. In versions 2.5.21 and below, an HTML template injection allows stored cross‑site scripting (XSS) via the mail template settings. Once a malicious payload is saved, any subsequent visit to the settings page in an authenticated admin context will execute attacker‑controlled JavaScript, enabling session/token theft and full admin account takeover. This issue is fixed in version 2.5.22.

Emlog vulnerable to Deserialization of Untrusted Data

Emlog is an open source website building system. Versions 2.5.13 and prior have a deserialization vulnerability. A user who creates a carefully crafted nickname can cause `str_replace` to replace the value of `name_orig` with empty, causing deserialization to fail and return `false`. Commit 9643250802188b791419e3c2188577073256a8a2 fixes the issue.

Emlog Pro has CSRF issue that Enables Admin Password Reset

Emlog is an open source website building system. Emlog Pro versions 2.5.19 and earlier are vulnerable to Cross‑Site Request Forgery (CSRF) on the password change endpoint. An attacker can trick a logged‑in administrator into submitting a crafted POST request to change the admin password without consent. Impact is account takeover of privileged users. Severity: High. As of time of publication, no known patched versions exist.

A stored Cross-Site Scripting (XSS) vulnerability has been discovered in Emlog Pro 2.5.19. The vulnerability exists in the email template configuration component located at /admin/setting.php?action=mail, which allows administrators to input HTML code that is not properly sanitized, leading to persistent JavaScript execution.

Emlog vulnerable to stored XSS in file upload functionality in emlog

Emlog is an open source website building system. A cross-site scripting (XSS) vulnerability in emlog up to and including version 2.5.22 allows authenticated remote attackers to inject arbitrary web script or HTML via the file upload functionality. As an authenticated user it is possible to upload .svg file that contains JavaScript code that is later being executed. Commit 052f9c4226b2c0014bcd857fec47677340b185b1 fixes the issue.

Emlog is Vulnerable to Stored Cross-Site Scripting (XSS) in "Twitter" Feature via Markdown Input

Emlog is an open source website building system. A stored Cross-Site Scripting (XSS) vulnerability exists in the "Twitter"feature of EMLOG Pro 2.5.21 and below. An authenticated user with privileges to post a "Twitter" message can inject arbitrary JavaScript code. The malicious script is stored on the server and gets executed in the browser of any user, including administrators, when they click on the malicious post to view it. This issue does not currently have a fix.

A stored Cross-Site Scripting (XSS) vulnerability has been discovered in Emlog Pro 2.5.19. The vulnerability exists due to insufficient validation of SVG file uploads in the /admin/media.php component, allowing attackers to upload malicious SVG files containing JavaScript code that executes when the uploaded file is viewed.

Emlog Pro blogger.php unrestricted upload

A security vulnerability has been detected in Emlog Pro up to 2.5.18. This affects an unknown function of the file /admin/blogger.php?action=update_avatar. Such manipulation of the argument image leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Emlog has Stored Cross-site Scripting vulnerability in file upload functionality

Emlog is an open source website building system. A cross-site scripting (XSS) vulnerability in emlog up to and including pro-2.5.17 allows authenticated remote attackers to inject arbitrary web script or HTML via the file upload functionality. As an authenticated user it is possible to upload an .svg file that contains JavaScript code that is later executed. As of time of publication, no known patched versions exist.

Emlog has Stored Cross-site Scripting vulnerability due to error

Emlog is an open source website building system. A cross-site scripting (XSS) vulnerability in emlog up to and including pro-2.5.17 allows remote attackers to inject arbitrary web script or HTML via the comment and comname parameters. Reflected XSS requires the victim to send POST requests, therefore the victim must be persuaded into clicking into sent URL. As of time of publication, no known patched versions exist.