CVE-2026-49442
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk15th percentile - higher than 15% of all known CVEs
Summary
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. On login attempts, the application returns slightly different error messages depending on whether the provided username exists — the only difference is the capitalization of the letter "f" in the word "failed".
Risk Assessment
An attacker can determine which usernames are valid, facilitating follow-up attacks such as password brute-forcing. Affected versions are before 1.2.31.
Recommendation
Upgrade Cacti to version 1.2.31 or later. Until then, consider restricting access to the login interface and deploying brute-force protection.
Other vulnerabilities in Cacti
See all- CVE-2016-10700High
In auth_login.php in Cacti before 1.0.0, remote authenticated users can bypass intended access restrictions by logging in as a user not in the Cacti database, because the guest user is not considered.
- CVE-2014-4000High
Cacti before 1.0.0 allows remote authenticated users to conduct PHP object injection attacks and execute arbitrary PHP code via a crafted serialized object.
- CVE-2017-16660High
Cacti version 1.1.27 allows remote authenticated administrators to conduct Remote Code Execution attacks by placing the Log Path under the web root and then making a remote_agent.php request containing PHP code in a Client-ip header.
- CVE-2017-16641High
In Cacti 1.1.27, the lib/rrd.php file allows remote authenticated administrators to execute arbitrary OS commands via the path_rrdtool parameter in an action=save request to settings.php.
- CVE-2017-1000031High
CVE-2017-1000031 is an SQL injection vulnerability in graph_templates_inputs.php in Cacti 0.8.8b that allows remote attackers to execute arbitrary SQL commands via the graph_template_input_id and graph_template_id parameters.
- CVE-2016-2313High
The auth_login.php file in Cacti before version 0.8.8g allows remote authenticated users who use web authentication to bypass intended access restrictions by logging in as a user not in the Cacti database.
- CVE-2016-3659High
SQL injection vulnerability in graph_view.php in Cacti 0.8.8.g allows remote authenticated users to execute arbitrary SQL commands via the host_group_data parameter.
- CVE-2015-4454High
SQL injection vulnerability in the get_hash_graph_template function in lib/functions.php in Cacti before version 0.8.8d allows remote attackers to execute arbitrary SQL commands via the graph_template_id parameter to graph_templates.php.
- CVE-2015-4342High
SQL injection vulnerability in Cacti before version 0.8.8d allows remote attackers to execute arbitrary SQL commands via unspecified vectors involving a cdef id.
- CVE-2014-2709High
The lib/rrd.php file in Cacti versions 0.8.7g, 0.8.8b, and earlier contains a vulnerability that allows remote attackers to execute arbitrary commands via shell metacharacters in unspecified parameters.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS