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TI-2026-47396 Aliases CVE-2026-66748GHSA-7xm9-634w-f5r7

Camaleon CMS 2.1.1 - 2.9.1 Authenticated RCE via select_eval Custom Field

Priority HIGH 73CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

Camaleon CMS versions 2.1.1 through 2.9.1 contains an authenticated remote code execution vulnerability that allows users with custom_fields manage permission to execute arbitrary Ruby code by supplying a malicious expression through the select_eval custom field type. Attackers can store an attacker-controlled Ruby expression in the field options command parameter, which is evaluated via instance_eval within an ERB view whenever a post edit page is rendered, achieving server-side code execution with web server process privileges.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01135 66th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
owen2345camaleon-cms2.1.1 – 2.9.1; 2.9.2 and later—No fix listedCNA
  • camaleon-cms Vendorowen2345 Affected 2.1.1 – 2.9.1; 2.9.2 and later Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-66748
  2. 2026-10-03 Alias added: GHSA-7xm9-634w-f5r7

References

Exploit 3

Patch 1

Other 2

  • TI-2023-14148 Camaleon CMS v2.7.0 was discovered to contain a Server-Side Template Injection (SSTI)… CVSS 3.1CRITICAL 9.8
  • TI-2024-31375 Arbitrary file write leading to RCE in Camaleon CMS CVSS 3.1CRITICAL 10.0
  • TI-2021-07976 Camaleon CMS - Insufficient Session Expiration after Password Change CVSS 3.1HIGH 8.8
  • TI-2024-31376 Arbitrary path traversal in Camaleon CMS CVSS 3.1HIGH 7.7
  • TI-2026-51449 CamaleonCMS Missing Authorization via Plugin Administration Endpoints CVSS 4.0HIGH 7.2
  • TI-2021-07975 Camaleon CMS - Stored Cross-Site Scripting (XSS) in Comments CVSS 3.1MEDIUM 6.1
See all 26 →

Sources

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