CVE-2026-4837: Eval Injection in Rapid7 Insight Agent
Vulnerability summary
CVE-2026-4837 is a high (CVSS 7.2) Eval Injection vulnerability in rapid7 insight_agent. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 53.4% of scored vulnerabilities.
Timeline
- 08-04-2026PublishedVulnerability first disclosed.
- 13-04-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 2 sources · 1 version- CVE.orgCNA6.6MediumCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.72%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
Increase +0.31 pp
From 0.41% on 22-09-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Rapid71 product
- insight_agent< 4.1.0.2
1 vendor · 1 product
References
1 links- docs.rapid7.com/insight/release-notes-2026-april/Release Notes