CVE-2026-49442 Cacti: User Enumeration via Error Messages
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-49442?
CVE-2026-49442 is a medium-severity vulnerability in cacti, published on 23 Oct 2026.
Official description
Cacti is an open source performance and fault management framework. Prior to version 1.2.31, a User Enumeration vulnerability allows an attacker to identify valid usernames on the Cacti service. When a user attempts to log in, the application returns slightly different error messages depending on whether the provided username exists in the system. When username exists on Cacti, in the response, they see Access Denied! Login failed. When it does not exist on Cacti, they see Access Denied! Login Failed. The only difference between the responses is the capitalization of the letter "f" in the word failed. This issue has been patched in version 1.2.31.
Weakness: CWE-204
Which versions are affected by CVE-2026-49442?
How do I fix CVE-2026-49442?
Upgrade to a fixed version.
Is CVE-2026-49442 being exploited?
There is no known exploitation of CVE-2026-49442 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-49442, GHSA-m7v2-f3xw-3qh7, UBUNTU-CVE-2026-49442.