What is CVE-2026-39955?

CVE-2026-39955 is a critical-severity vulnerability in Cacti, classified under SQL Injection. CVSS score: 9.8/10. Published 2026-06-24.

How severe is CVE-2026-39955?

Critical severity. CVSS v3 base score is 9.8 out of 10.

SQL Injection in Cacti

CVE-2026-39955

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have pre-authentication SQL Injection via unanchored FILTER_VALIDATE_REGEXP in graph_view.php. This issue has been fixed in version 1.2.31.

Vulnerability class: SQL Injection

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cacti — versions < 1.2.31

Weakness classification (CWE)

CWE-89 — SQL Injection

References

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

Frequently asked questions

What is CVE-2026-39955?: CVE-2026-39955 is a critical-severity vulnerability in Cacti, classified under SQL Injection. CVSS score: 9.8/10. Published 2026-06-24.
How severe is CVE-2026-39955?: Critical severity. CVSS v3 base score is 9.8 out of 10.