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TI-2026-79925 Aliases CVE-2026-49442

User enumeration via error messages in Cacti

Priority MEDIUM 63CWE-204Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-204.

Summary

Cacti before 1.2.31 returns login error messages that differ depending on whether the username exists. The only difference is the capitalization of the letter "f" in "failed", which lets an attacker identify valid usernames (CWE-204). A remote, unauthenticated attacker can exploit this without user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00237 14th percentileScored 2026-11-07
Fix Fixed cacti (Cacti): 1.2.31

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Cacticactibefore 1.2.311.2.31Patch availableCNA
  • cacti VendorCacti Affected before 1.2.31 Fixed in 1.2.31 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:cacti:cacti:*:*:*:*:*:*:*:*——Cacti
  • cpe:2.3:a:cacti:cacti:*:*:*:*:*:*:*:* Versions — — ·Cacti

Remediation

Upgrade Cacti to version 1.2.31, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

  • Fix · CNA cacti (Cacti) Fixed in 1.2.31

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-23 Threatist record created from CVE-2026-49442
  2. 2026-10-30 CISA SSVC decision points changed
  3. 2026-10-30 Priority changed: LOW → MEDIUM
  4. 2026-11-02 Affected versions changed · Red Hat
  5. 2026-11-02 CVSS score added · Red Hat

References

Other 3

  • TI-2022-22813 Unauthenticated command injection in cacti KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-19663 Cacti command injection in cmd_realtime.php CVSS 3.1CRITICAL 10.0
  • TI-2023-20500 Unauthenticated SQL Injection in graph_view.php in Cacti CVSS 3.1CRITICAL 9.8
  • TI-2024-16869 Cacti RCE vulnerability when importing packages CVSS 3.1CRITICAL 9.1
  • TI-2024-20809 SQL Injection vulnerability in automation_get_new_graphs_sql CVSS 3.1HIGH 8.8
  • TI-2023-26750 Cacti SQL Injection vulnerability CVSS 3.1HIGH 8.8
See all 158 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences