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CVE-2026-4837: CWE-95 Improper neutralization of directives in dynamically evaluated code ('eval injection') in Rapid7 Insight Agent

0
Medium
VulnerabilityCVE-2026-4837cvecve-2026-4837cwe-95
Published: Wed Apr 08 2026 (04/08/2026, 15:59:03 UTC)
Source: CVE Database V5
Vendor/Project: Rapid7
Product: Insight Agent

Description

An eval() injection vulnerability in the Rapid7 Insight Agent beaconing logic for Linux versions could theoretically allow an attacker to achieve remote code execution as root via a crafted beacon response. Because the Agent uses mutual TLS (mTLS) to verify commands from the Rapid7 Platform, it is unlikely that the eval() function could be exploited remotely without prior, highly privileged access to the backend platform.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 04/09/2026, 04:35:55 UTC

Technical Analysis

This vulnerability involves improper neutralization of directives in dynamically evaluated code (CWE-95) within the Rapid7 Insight Agent's beaconing logic on Linux. Specifically, the use of eval() on data from the beacon response could allow an attacker to execute arbitrary code with root privileges. The agent uses mutual TLS to authenticate commands from the Rapid7 platform, which significantly limits the likelihood of remote exploitation without prior compromise of the backend platform. The CVSS 3.1 base score is 6.6, reflecting network attack vector, high attack complexity, required high privileges, no user interaction, and high impact on confidentiality, integrity, and availability.

Potential Impact

Successful exploitation could lead to remote code execution as root on affected Linux systems running the Insight Agent. This would compromise system confidentiality, integrity, and availability. However, the requirement for prior highly privileged access to the Rapid7 backend platform and mutual TLS authentication reduces the practical risk of remote exploitation.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary workaround is currently documented, organizations should monitor Rapid7 advisories for updates. Given the mutual TLS protection, no immediate action may be required unless there is evidence of backend platform compromise.

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Technical Details

Data Version
5.2
Assigner Short Name
rapid7
Date Reserved
2026-03-25T14:28:27.182Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 69d729211cc7ad14da1b339d

Added to database: 4/9/2026, 4:20:49 AM

Last enriched: 4/9/2026, 4:35:55 AM

Last updated: 4/9/2026, 6:54:22 AM

Views: 5

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