CVE-2026-101093: Cotonti through 1.0.0 Cross-Site Request Forgery via User Group Deletion

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-28 · updated 2026-09-29
Weakness: CWE-352

Description

Cotonti through 1.0.0 contains a cross-site request forgery vulnerability in admin.users.php that allows attackers to delete user groups without token verification. Attackers can craft malicious links or pages that trick authenticated administrators into deleting custom groups and their associated permissions by riding the administrator's session.

Affected products

Cotonti: through 1.0.0

References

https://github.com/Cotonti/Cotonti
https://github.com/Cotonti/Cotonti/blob/1.0.0/system/admin/admin.users.php#L136-L140
https://github.com/Cotonti/Cotonti/issues/1907#issuecomment-5845691148
https://github.com/Cotonti/Cotonti/pull/1908
https://www.vulncheck.com/advisories/cotonti-through-1.0.0-cross-site-request-forgery-via-user-group-deletion

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