Unauthenticated Local File Inclusion in Cacti by Cacti Project
CVE-2026-39938

9.8CRITICAL

Key Information:

Vendor

Cacti

Status
Cacti
Vendor
CVE Published:
24 June 2026

What is CVE-2026-39938?

Cacti, an open-source performance and fault management framework, is vulnerable to unauthenticated Local File Inclusion (LFI) in versions 1.2.30 and earlier. This vulnerability arises from inadequate input validation on the graph_theme parameter and rrdtool IPC serialization hardening. Successful exploitation of this vulnerability allows attackers to include arbitrary files, potentially compromising sensitive information and system integrity. Users are strongly urged to upgrade to version 1.2.31 or later to mitigate this security risk.

Affected Version(s)

cacti < 1.2.31

References

https://github.com/Cacti/cacti/security/advisories/GHSA-r...
x_refsource_CONFIRM
https://github.com/Cacti/cacti/commit/9871f0cef9af285398d...
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CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.