CVE-2026-39938

Cacti: Unauthenticated RCE on Graph Image

CVSS 9.8 CRITICALEPSS 0.4%CWE-22 CWE-78

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/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Cacti · cacti

public PoCs found — 1

githubgithub.com/Polosss/By-Poloss..-..CVE-2026-39938★ 0

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://github.com/Cacti/cacti/commit/9871f0cef9af285398d558c9b3188d5977e01a04 https://github.com/Cacti/cacti/security/advisories/GHSA-rm7p-qcqm-x5m6