CVE-2026-39710: Medium Vulnerability in stmcan RT-Theme 18 | Extensions

A Cross-Site Request Forgery (CSRF) vulnerability exists in stmcan RT-Theme 18 | Extensions. This vulnerability allows attackers to perform unauthorized actions on behalf of authenticated users. The severity level of this vulnerability is classified as medium, with a CVSS score of 5.4, indicating that while exploitation is possible, it requires some level of user interaction.

Organizations using affected versions of RT-Theme 18 | Extensions must consider the real-world risks associated with this vulnerability. Attackers may leverage this vulnerability to execute unauthorized commands, potentially leading to data manipulation or integrity issues. Urgency for defenders is high, as the vulnerability affects all versions up to and including 2.5.

As of now, there are no known exploits or proof of concept (PoC) publicly available for this vulnerability. However, organizations should remain vigilant and address this vulnerability in their patch cycle to avoid any potential exploitation. CSRF vulnerabilities can often be exploited in various applications if not adequately mitigated.

Organizations should prioritize patching immediately. Continuous monitoring and security assessments are crucial in identifying and mitigating such vulnerabilities effectively.

Vulnerability Details

The CSRF vulnerability in stmcan RT-Theme 18 | Extensions allows unauthorized actions to be performed by attackers. This issue affects versions from n/a through <= 2.5. The CVSS 3.1 vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L, resulting in a base score of 5.4. The vulnerability has been classified under CWE-352 for CSRF vulnerabilities.

Technical Analysis

The root cause of this vulnerability stems from inadequate verification of requests in the affected plugin. The attack vector is network-based, requiring only low complexity and no privileges needed for exploitation. User interaction is required to trigger the vulnerability, as an authenticated user must be tricked into clicking a malicious link.

The confidentiality impact is none, while the integrity and availability impacts are low. Attackers could manipulate user data without authorization, albeit with limited potential for denial of service.

Risk & Impact Analysis

Risk to organizations includes unauthorized actions being performed on behalf of legitimate users, which could lead to data corruption or exposure. Given that the vulnerability is classified as medium severity, organizations should address it in their priority patch cycle.

Due to the nature of CSRF vulnerabilities, the blast radius could extend to any user with an active session, especially if they are tricked into executing harmful actions. Organizations should also consider the potential reputational damage associated with any unauthorized actions taken through exploitation.

Organizations should schedule remediation and enhance their security posture through regular security assessments, focusing on CSRF protection mechanisms.

Exploitation Status

Affected Versions

The affected versions include RT-Theme 18 | Extensions from n/a through <= 2.5. Organizations should ensure they have updated their installations to mitigate this vulnerability.

Mitigation & Remediation

Organizations must apply the latest patches provided by the vendor to remediate this vulnerability. If the patch is not available, consider implementing security measures such as CSRF tokens to prevent unauthorized actions.

Organizations should also conduct a thorough review of their web applications for CSRF vulnerabilities and ensure proper validation of requests. Additionally, using security frameworks that provide built-in CSRF protection can further mitigate risks.

For more information on implementing effective security measures, organizations can refer to our penetration testing services.

Detection Guidance

To detect potential exploitation of this vulnerability, organizations should monitor user activity logs for any unusual behavior that may indicate CSRF attacks. Looking for multiple actions taken by users in a short time frame could be a sign of exploitation.

Additionally, organizations should implement network monitoring to look for unusual traffic patterns that may indicate an attack. Regular security audits can also help identify vulnerabilities in web applications.

AppSecure Threat Intelligence Insight

The long-term significance of this vulnerability lies in its potential to be exploited if left unaddressed. As organizations increasingly rely on web applications, ensuring robust security measures against vulnerabilities like CSRF is crucial.

This vulnerability illustrates a common trend in web application security, emphasizing the importance of implementing security best practices, including CSRF protection mechanisms. Organizations can learn from this incident to enhance their security frameworks.

For more insights on securing web applications, organizations can explore our resources on CSRF attack prevention, web application penetration testing, and security testing best practices to strengthen your defenses.