What is CVE-2026-40080?

CVE-2026-40080 is a medium-severity vulnerability in Cacti, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2026-06-25.

How severe is CVE-2026-40080?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in Cacti

CVE-2026-40080

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 log…

Vulnerability class: Open Redirect

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Cacti — versions < 1.2.31

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-40080?: CVE-2026-40080 is a medium-severity vulnerability in Cacti, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2026-06-25.
How severe is CVE-2026-40080?: Medium severity. CVSS v3 base score is 6.1 out of 10.