https://feed.craftedsignal.io/products/ctms/Trending threats, MITRE ATT&CK coverage, and detection metadata — refreshed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioSat, 02 May 2026 10:16:18 +0000https://feed.craftedsignal.io/briefs/2026-05-sunnet-file-upload/Sat, 02 May 2026 10:16:18 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-05-sunnet-file-upload/A privileged remote attacker can exploit CVE-2026-7490 in Sunnet CTMS and CPAS to upload and execute web shell backdoors, leading to arbitrary code execution on the server.CVE-2026-7490 is an arbitrary file upload vulnerability found in Sunnet CTMS and CPAS. Disclosed in May 2026, this vulnerability enables a privileged attacker to upload malicious files, specifically web shell backdoors, to the affected server. This can be achieved remotely, without requiring local system access, given the attacker already possesses valid privileged credentials for the application. Successful exploitation allows the attacker to execute arbitrary code on the server, potentially leading to complete system compromise. This vulnerability poses a significant threat to organizations using these Sunnet products, as it could result in data breaches, service disruption, and other malicious activities.

Attack Chain

1. Attacker gains privileged access to the CTMS or CPAS application, either through credential theft, phishing, or other means.
2. Attacker identifies the file upload functionality within the application.
3. Attacker crafts a malicious file, such as a PHP web shell, designed to execute arbitrary commands on the server.
4. Attacker bypasses any client-side file type validation mechanisms.
5. Attacker uploads the malicious file to the server through the vulnerable file upload endpoint.
6. The application saves the file to a publicly accessible directory without proper sanitization or validation.
7. Attacker accesses the uploaded web shell via a web browser.
8. Attacker uses the web shell to execute arbitrary commands on the server, leading to full system compromise.

Impact

Successful exploitation of CVE-2026-7490 allows attackers to execute arbitrary code on the affected server. This can lead to a range of malicious activities, including data theft, modification, or destruction, installation of malware, and complete system takeover. Since the vulnerability affects CTMS and CPAS, organizations in sectors utilizing these systems for content or process management are particularly at risk. The vulnerability’s high severity allows attackers to quickly gain a foothold and potentially compromise sensitive information or disrupt business operations.

Recommendation

• Apply available patches or updates from Sunnet to address CVE-2026-7490.
• Implement the Sigma rule Detect Malicious File Uploads to Web Servers to detect suspicious file uploads based on file extensions and content.
• Review and harden file upload functionalities within CTMS and CPAS to prevent arbitrary file uploads.
• Monitor web server logs for access to suspicious files in upload directories, using the Web Shell Access Sigma rule.
• Restrict access to file upload functionalities to only authorized users with appropriate privileges.

]]>highadvisoryarbitrary-file-uploadweb-shellcode-executionhttps://feed.craftedsignal.io/briefs/2026-05-sunnet-ctms-sqli/Sat, 02 May 2026 10:16:18 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-05-sunnet-ctms-sqli/Sunnet CTMS is vulnerable to SQL injection (CVE-2026-7489), allowing authenticated remote attackers to execute arbitrary SQL commands and compromise the database.A SQL Injection vulnerability, identified as CVE-2026-7489, exists in CTMS developed by Sunnet. This flaw allows authenticated remote attackers to inject arbitrary SQL commands. Successful exploitation could allow the attackers to read, modify, and delete database contents. The vulnerability was published on May 2, 2026. The scope of this vulnerability affects systems running the vulnerable CTMS software, potentially leading to data breaches and system compromise.

Attack Chain

1. The attacker authenticates to the CTMS application.
2. The attacker identifies an endpoint vulnerable to SQL injection.
3. The attacker crafts a malicious SQL query designed to exploit the injection point, likely using tools like Burp Suite or SQLMap.
4. The attacker injects the SQL payload via a crafted HTTP request, targeting vulnerable parameters within the request.
5. The CTMS application executes the injected SQL query against the database.
6. The attacker bypasses authentication or authorization controls to gain elevated privileges within the application or database.
7. The attacker reads sensitive data from the database, such as user credentials or confidential business information.
8. The attacker modifies or deletes database entries, leading to data corruption or denial of service.

Impact

Successful exploitation of this SQL injection vulnerability could allow attackers to read sensitive information, modify data, or delete critical database contents. This could lead to a complete compromise of the CTMS application and its underlying database, impacting all users and data managed by the system. The severity is heightened by the potential for attackers to gain complete control over the database, leading to significant data breaches and operational disruption.

Recommendation

• Apply the patch or upgrade CTMS to a version that addresses CVE-2026-7489 as soon as it becomes available from Sunnet.
• Deploy the Sigma rule “Detect Suspicious SQL Injection Attempts” to identify potential exploitation attempts against CTMS (see below).
• Review web server logs for suspicious activity indicative of SQL injection attempts, specifically looking for unusual characters or SQL syntax in HTTP request parameters.
• Implement proper input validation and sanitization techniques to prevent SQL injection vulnerabilities in CTMS and other web applications.

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