CVE-2026-100522

Summary

Cotonti through 1.0.0 contains a reflected cross-site scripting vulnerability in message.php where the lng parameter is not properly escaped before output in the confirmation dialog. Unauthenticated attackers can craft malicious links with script payloads in the lng parameter to execute arbitrary JavaScript in victim browser sessions.

Affected Software

Weaknesses

• CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

• https://github.com/Cotonti/Cotonti/issues/1907
• https://github.com/Cotonti/Cotonti/pull/1908
• https://github.com/Cotonti/Cotonti/blob/1.0.0/message.php
• https://github.com/Cotonti/Cotonti
• https://www.vulncheck.com/advisories/cotonti-through-1.0.0-reflected-xss-via-message-php-lng-parameter

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