CVE-2026-101022

MEDIUM 4.3

Grid Protection Alliance openPDC and openHistorian Server-Side Request Forgery (SSRF)

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	grid protection alliance
Product	openpdc
Published	Oct 9, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

Grid Protection Alliance / openPDC

0 < 2.9.477 0 < 2.9.482

Grid Protection Alliance / openPDC (Docker image)

0 < 2.9.477 0 < 2.9.482

Grid Protection Alliance / openHistorian

0 < 2.8.580 0 < 2.8.585

References

NVD ↗ CVE.org ↗ EPSS Data ↗

cisa.gov: https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-02 github.com: https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-02.json

Credits

Shubham Raj (Cipher) of Causal Security reported this vulnerability to CISA.