CVE-2026-93871

medium

Description

Cotonti through 1.0.0 fails to validate redirect destinations in page bodies prefixed with redir:, allowing authenticated users with page creation or edit permissions to store redirects to arbitrary external hosts. Attackers can craft pages on trusted domains that redirect visitors to malicious sites for phishing attacks without administrative privileges.

References

https://www.vulncheck.com/advisories/cotonti-through-1.0.0-stored-open-redirect-via-page-redir-prefix

https://github.com/Cotonti/Cotonti/pull/1901

https://github.com/Cotonti/Cotonti/issues/1893

https://github.com/Cotonti/Cotonti/blob/1.0.0/modules/page/inc/page.main.php

https://github.com/Cotonti/Cotonti

Details

Source: Mitre, NVD

Published: 2026-09-18

Updated: 2026-09-18

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.4

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

Severity: Medium

CVSS v4

Base Score: 5.1

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Severity: Medium

EPSS

EPSS: 0.00167