CVE-2026-49442 Details
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.
A user enumeration vulnerability has been identified in Cacti versions prior to 1.2.31. This vulnerability allows an attacker to determine valid usernames by exploiting differences in error messages returned during the login process. When a valid username is entered, the response includes 'Access Denied! Login failed.' with a lowercase 'f' in 'failed'. In contrast, an invalid username generates a response that capitalizes the 'F', reading 'Access Denied! Login Failed.' This subtle distinction can be leveraged to identify existing usernames on the Cacti service.
Users can upgrade to Cacti version 1.2.31 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 23, 2026CISA-ADP
Assessed Oct 30, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Cacti/cacti/security/advisories/GHSA-m7v2-f3xw-3qh7 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/Cacti/cacti/commit/ab4baf338d65dcaafe1bd97d1e2a310fe0af0e3e | [email protected] | Source CodeVendor |
| https://github.com/Cacti/cacti/pull/7166 | [email protected] | Issue TrackingVendor |
| https://github.com/Cacti/cacti/security/advisories/GHSA-m7v2-f3xw-3qh7 | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-204 | Observable Response Discrepancy | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Cacti | <= 1.2.30 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 30, 2026 | CVE Modified | CISA-ADP |
| Oct 23, 2026 | New CVE Received | [email protected] |