Executive Summary

[{'type': 'paragraph', 'content': 'CVE-2026-2546 is a reflected Cross-Site Scripting (XSS) vulnerability in the LigeroSmart application, specifically involving the "SortBy" parameter in HTTP POST requests to the /otrs/index.pl endpoint.'}, {'type': 'paragraph', 'content': 'An attacker can exploit this vulnerability by sending a crafted POST request with malicious JavaScript code embedded in the "SortBy" parameter. This malicious code is then reflected in the server\'s response without proper sanitization or encoding, allowing the attacker to execute arbitrary scripts in the victim\'s browser.'}, {'type': 'paragraph', 'content': 'The vulnerability arises due to insufficient input validation and output encoding of the "SortBy" parameter, enabling remote attackers to inject and execute JavaScript code via reflected XSS.'}] [1, 2, 3]

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Impact Analysis

[{'type': 'paragraph', 'content': "This vulnerability allows an attacker to execute arbitrary JavaScript code in the context of a victim's browser when they access the affected LigeroSmart page."}, {'type': 'paragraph', 'content': 'Such script execution can lead to various impacts including theft of session cookies, user impersonation, unauthorized actions performed on behalf of the user, and potential compromise of data integrity.'}, {'type': 'paragraph', 'content': 'Because the attack is reflected and requires some user interaction, it can be used in phishing or social engineering attacks to trick users into triggering the malicious payload.'}] [1, 2, 3]

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Compliance Impact

I don't know

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Detection Guidance

[{'type': 'paragraph', 'content': "This vulnerability can be detected by sending crafted HTTP POST requests to the endpoint /otrs/index.pl with the SortBy parameter containing a test script payload, and observing if the payload is reflected in the server's response without proper sanitization."}, {'type': 'paragraph', 'content': 'For example, you can use curl to send a POST request with a malicious SortBy parameter to test for reflected XSS:'}, {'type': 'list_item', 'content': 'curl -X POST http://<target-host>/otrs/index.pl -H "Content-Type: application/x-www-form-urlencoded; charset=UTF-8" -H "X-Requested-With: XMLHttpRequest" --data-urlencode "SortBy=\'<ScRiPt>alert(7777)</ScRiPt>\'"'}, {'type': 'paragraph', 'content': 'If the response contains the injected script tag without encoding or sanitization, the vulnerability is present.'}] [1, 2]

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Mitigation Strategies

There are no known official patches or countermeasures released by the LigeroSmart project as of now.

Immediate mitigation steps include:

• Avoid using affected versions of LigeroSmart (up to 6.1.26 or 6.1.27) and consider upgrading to a version that addresses this issue once available.
• Implement web application firewall (WAF) rules to detect and block malicious payloads targeting the SortBy parameter.
• Restrict access to the vulnerable endpoint /otrs/index.pl to trusted users or networks where possible.
• Educate users to be cautious of suspicious links that may exploit this reflected XSS vulnerability.

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