Description
GREENmod uses named pipes for communication between plugins, the web portal, and the system service, but the access control lists for these pipes are configured incorrectly. This allows an attacker to communicate with the stream and upload any XML or JSON file, which will be processed by the named pipe with the privileges of the user under whose context the service is running. This allows for Server-Side Request Forgery to any Windows system on which the agent is installed and which provides communication via SMB or WebDav. This issue was fixed in version 2.8.33.
References (2)
Core 2
Core References
Product product
https://www.nomios.pl/greenmod/
Third Party Advisory third-party-advisory
https://cert.pl/posts/2026/04/CVE-2026-5131
Scores
CVSS v4
6.9
EPSS
0.0043
EPSS Percentile
33.8%
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-918
Status
published
Products (1)
Nomios Poland/GREENmod
< 2.8.33
Published
Apr 17, 2026
Tracked Since
Apr 17, 2026