CVE-2026-100522
Cotonti through 1.0.0 Reflected XSS via message.php lng parameter
Cotonti Cotonti
CVSS
5.1MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.21%Chance of exploitation activity in the next 30 days, higher than 10% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
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.
Text from CVE List
Affected versions 1
- Cotontiaffected: all versions through 1.0.0CVE List
References 5
- github.com/Cotonti/Cotonti/pull/1908Fixvia CVE List
- vulncheck.com/advisories/cotonti-through-1.0.0-reflected-xss-via-message-php-lng-parameterAdvisoryvia CVE List
- github.com/Cotonti/Cotonti/issues/1907Referencevia CVE List
- github.com/Cotonti/Cotonti/blob/1.0.0/message.phpReferencevia CVE List
- github.com/Cotonti/CotontiReferencevia CVE List