CVE-2026-101022
Medium
Description
A Modbus connection feature on openPDC accepts a caller-specified destination address and port with no restriction on which internal hosts may be targeted. An authenticated user can attempt connections to arbitrary internal network destinations, revealing which destinations are reachable. With repeated attempts, an attacker may be able to map the internal network.
SeverityMedium
CVSS4.3
Exploit probability—
ProductopenPDC
PublishedOct 9, 2026
First seenOct 9, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- Grid Protection Alliance openPDC2.9.477, 2.9.482 or later
- Grid Protection Alliance openPDC (Docker image)2.9.477, 2.9.482 or later
- Grid Protection Alliance openHistorian2.8.580, 2.8.585 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Grid Protection Alliance openPDC | v < 2.9.477, v < 2.9.482 | 2.9.477, 2.9.482 |
| Grid Protection Alliance openPDC (Docker image) | v < 2.9.477, v < 2.9.482 | 2.9.477, 2.9.482 |
| Grid Protection Alliance openHistorian | v < 2.8.580, v < 2.8.585 | 2.8.580, 2.8.585 |
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