CVE-2026-100521

MEDIUM 6.1

Cotonti through 1.0.0 Reflected XSS via search highlight parameter

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

Cotonti through 1.0.0 contains a reflected cross-site scripting vulnerability in the search plugin highlight parameter that performs no HTML or JavaScript escaping. Attackers can craft malicious links with injected JavaScript in the highlight parameter that executes in the browser of any visitor who opens the link, including administrators.

CWE	CWE-79
Vendor	cotonti
Product	cotonti
Published	Sep 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Cotonti / Cotonti

0 ≤ 1.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/Cotonti/Cotonti/issues/1907 github.com: https://github.com/Cotonti/Cotonti/pull/1908 github.com: https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/search/search.header.php github.com: https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/search/search.page.first.php github.com: https://github.com/Cotonti/Cotonti vulncheck.com: https://www.vulncheck.com/advisories/cotonti-through-1.0.0-reflected-xss-via-search-highlight-parameter

Credits

Harsh Raj Singhania