CVE-2026-40084

Name	CVE-2026-40084
Description	Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Path Traversal through the Report format_file Parameter, causing arbitrary file read. This vulnerability occurs in two stages. In the first stage (stored injection), lib/html_reports.php at line 283 stores $save['format_file'] = $post['format_file'] directly into the database without any validation. In the second stage (file read), lib/reports.php at line 667 concatenates CACTI_PATH_FORMATS . '/' . $format_file, and line 670 then calls file($format_file), reading arbitrary files from the filesystem. This issue has been fixed in version 1.2.31.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
cacti (PTS)	bullseye	1.2.16+ds1-2+deb11u3	vulnerable
	bullseye (security)	1.2.16+ds1-2+deb11u5	vulnerable
	bookworm, bookworm (security)	1.2.24+ds1-1+deb12u5	vulnerable
	trixie	1.2.30+ds1-1	vulnerable
	forky, sid	1.2.30+ds1-3	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
cacti	source	(unstable)	(unfixed)

Notes

https://github.com/Cacti/cacti/security/advisories/GHSA-mjvw-mhj5-9jcj
Fixed by: https://github.com/Cacti/cacti/commit/4c09efaebf3a9faec66969d0b5c4aceaf397f37f (release/1.2.31)