Bug 2559921 (CVE-2026-49442)

Summary: CVE-2026-49442 cacti: cacti: User enumeration via discrepant login error messages
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Cacti. This vulnerability allows an unauthenticated remote attacker to perform user enumeration by observing subtle discrepancies in login failure responses. Because the application returns slightly different error messages depending on whether a submitted username exists in the system, an attacker can identify valid user accounts to facilitate targeted attacks.
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Bug Depends On: 2564595    
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Description OSIDB Bzimport 2026-10-23 15:02:11 UTC 
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.