VulnerabilityAnalyzed

CVE-2026-39938

Cacti is an open source performance and fault management framework.

CRITICAL 9.8EPSS 0.69%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.69% probability · 51th percentile
CISA KEV: Not listed
Weakness: CWE-22, CWE-78
Affected: cacti/cacti
Source: security-advisories@github.com

References

https://github.com/Cacti/cacti/commit/9871f0cef9af285398d558c9b3188d5977e01a04Patch
https://github.com/Cacti/cacti/security/advisories/GHSA-rm7p-qcqm-x5m6Patch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.