CVEvulnerability

CVE-2026-40080

6.1 MEDIUM Published 2026-06-25 Modified 2026-06-29 Official page ↗
Status
Analyzed
Published
2026-06-25
Last modified
2026-06-29
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weaknesses
CWE-601

Description

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Open Redirect through a substring check rather than a host check at str_contains($referer, CACTI_PATH_URL). When the user's login_opts == '1' (redirect to referer after login), the function used $_SERVER['HTTP_REFERER'] directly. An attacker could craft a referer such as https://evil.com/cacti/. Where CACTI_PATH_URL is /cacti/, the substring matches and the user is redirected to evil.com after login. The pre-existing validate_redirect_url() helper at lib/html_utility.php performed proper validation but was not invoked from auth_login_redirect(). This issue has been fixed in version 1.2.31.

Affected configurations

• cacti cacti (< 1.2.31)

Related

Weakness · CWE (1)

  • CWE-601 URL Redirection to Untrusted Site weakness

References