Path traversal in Cacti - CVE-2026-39938
Published: June 22, 2026
Vulnerability identifier: #VU134986
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-39938
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to read arbitrary files.
The vulnerability exists due to path traversal in the graph_theme parameter when handling requests. A remote attacker can send a specially crafted request to read arbitrary files.
Affected software
Cacti
How to mitigate CVE-2026-39938
Install security update from vendor's website.
Cacti - update to 1.2.31