High severity · published Jun 25, 2026
CVE-2026-9155
OS Command Injection in Rapid7 InsightConnect Sed Plugin via expression parameter.
8.8
CVSS
1.6%
EPSS
No
On KEV
Description
OS Command Injection vulnerability in Rapid7 InsightConnect Sed Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the expression parameter due to insufficient input validation.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IS
InsightConnect Sed Plugin · Rapid7
before 2.0.5 · source: vendor
SE
Sed · Gnu
4.2.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9155
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-9155
Vendor Advisory
https://extensions.rapid7.com/extension/sed
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