# CVE-2026-100730: Grid Protection Alliance openPDC and openHistorian deserialization and authentication vulnerabilities

Source: https://junglewise.ai/threats/cve-2026-104629-grid-protection-alliance-openpdc-and-openhistorian  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-09. Updated: 2026-10-08  
License: CC BY 4.0 with a link back

CVE-2026-100730 · Severity: high · CVSS 8.8 · Published 2026-10-09

Grid Protection Alliance openPDC and openHistorian are critical power grid monitoring and data archival systems used in industrial control environments. Five distinct vulnerabilities allow unauthenticated attackers to execute arbitrary code, bypass authentication, perform server-side request forgery attacks, and exploit hardcoded credentials, potentially leading to complete system compromise and disruption of power grid visibility and operations.

Technologies: [Grid Protection Alliance openHistorian](https://junglewise.ai/threats/technologies/openhistorian), [Grid Protection Alliance openPDC](https://junglewise.ai/threats/technologies/openpdc), [Grid Protection Alliance openPDC (Docker image)](https://junglewise.ai/threats/technologies/openpdc-docker-image). Vendors: [Grid Protection Alliance](https://junglewise.ai/threats/vendors/grid-protection-alliance).

## Quick answers

**Is CVE-2026-100730 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-100730 being exploited in the wild.

**How severe is CVE-2026-100730?** High severity, with a CVSS score of 8.8, published 9 October 2026.

**Which products and versions are affected?** Grid Protection Alliance openHistorian before 2.8.580, before 2.8.585; Grid Protection Alliance openPDC before 2.9.477, before 2.9.482; Grid Protection Alliance openPDC (Docker image) before 2.9.477, before 2.9.482.

**Is there a fix for CVE-2026-100730?** Yes: fixed in openPDC 2.9.477, 2.9.482; openPDC (Docker image) 2.9.477, 2.9.482; openHistorian 2.8.580, 2.8.585. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-100730 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-100730?** Check whether you run Grid Protection Alliance openHistorian, Grid Protection Alliance openPDC or Grid Protection Alliance openPDC (Docker image) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in openPDC 2.9.477, 2.9.482; openPDC (Docker image) 2.9.477, 2.9.482; openHistorian 2.8.580, 2.8.585

## Technical details

The vulnerabilities include unsafe deserialization of untrusted data, missing authentication controls on critical functions, SSRF, hardcoded credentials, and unsafe reflection allowing remote code execution. Affected versions prior to 2.9.477/2.9.482 (openPDC) and 2.8.580/2.8.585 (openHistorian) are vulnerable to network-based attacks without requiring prior authentication. Multiple CVEs collectively address these five distinct attack vectors in industrial control network software.

## Affected products

- Grid Protection Alliance openPDC before 2.9.477, before 2.9.482
- Grid Protection Alliance openPDC (Docker image) before 2.9.477, before 2.9.482
- Grid Protection Alliance openHistorian before 2.8.580, before 2.8.585

## Identifiers

- CVE-2026-100730
- CVE-2026-85479
- CVE-2026-105278
- CVE-2026-105281
- CVE-2026-104629
- CVE-2026-101022

## Timeline

- 2026-10-08: advisory: CISA ICS Advisory ICSA-26-281-02 published

## Related threats

- [Grid Protection Alliance openPDC Docker hardcoded credential](https://junglewise.ai/threats/cve-2026-105278-the-published-docker-image-for-openpdc-includes-a-fixed)
- [openPDC STTP data publisher missing authentication](https://junglewise.ai/threats/cve-2026-85479-the-sttp-based-data-publisher-on-openpdc-accepts-network)
- [Grid Protection Alliance openPDC data publisher missing authentication](https://junglewise.ai/threats/cve-2026-105281-the-internal-data-publisher-on-openpdc-accepts-network)
- [Grid Protection Alliance openPDC Modbus SSRF network reconnaissance](https://junglewise.ai/threats/cve-2026-101022-a-modbus-connection-feature-on-openpdc-accepts-a-caller)
- [Grid Protection Alliance openPDC and openHistorian unsafe deserialization](https://junglewise.ai/threats/cve-2026-100730-a-service-console-interface-on-openpdc-and-openhistorian)