CVE-2026-39938

Cacti: Unauthenticated RCE on Graph Image

State: Published
Severity: 9.8 Critical
Published: Jun 24, 2026
Updated: Jun 26, 2026
Reserved: Apr 7, 2026

Description

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have unauthenticated LFI through graph_theme and rrdtool IPC serialization hardening. This issue has been resolved in version 1.2.31.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

Product	Versions
cactiCacti	< 1.2.31Affected

References

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