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TI-2026-70017 Aliases CVE-2026-100730GHSA-g2gc-jv32-q89f

Untrusted data deserialization in openPDC and openHistorian

Priority MEDIUM 49CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

Grid Protection Alliance openPDC and openHistorian deserialize client-supplied data in the service console interface (CWE-502). On systems without Windows Authentication, an unauthenticated network attacker can trigger deserialization of an arbitrary object graph, which could allow remote code execution under the privileges of the service account. On systems with Windows Authentication, the attacker must already be authenticated.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

A service console interface on openPDC and openHistorian deserializes a client-supplied data structure. On systems using Windows Authentication, an attacker must already be authenticated to reach this function; on systems without Windows Authentication, this is reachable by an unauthenticated network attacker. This allows an attacker to trigger deserialization of an arbitrary object graph, which could allow remote code execution under the privileges of the affected service account.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00625 50th percentileScored 2026-11-07
Fix Fixed openPDC (Grid Protection Alliance): 2.9.477, 2.9.482openPDC (Docker image) (Grid Protection Alliance): 2.9.477, 2.9.482+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Grid Protection AllianceopenPDCbefore 2.9.477; before 2.9.4822.9.477, 2.9.482Patch availableCNA
Grid Protection AllianceopenPDC (Docker image)before 2.9.477; before 2.9.4822.9.477, 2.9.482Patch availableCNA
Grid Protection AllianceopenHistorianbefore 2.8.580; before 2.8.5852.8.580, 2.8.585Patch availableCNA
  • openPDC VendorGrid Protection Alliance Affected before 2.9.477; before 2.9.482 Fixed in 2.9.477, 2.9.482 Patch available CNA
  • openPDC (Docker image) VendorGrid Protection Alliance Affected before 2.9.477; before 2.9.482 Fixed in 2.9.477, 2.9.482 Patch available CNA
  • openHistorian VendorGrid Protection Alliance Affected before 2.8.580; before 2.8.585 Fixed in 2.8.580, 2.8.585 Patch available CNA

Remediation

openPDC is fixed in versions 2.9.477 and 2.9.482, and the openPDC Docker image is fixed in the same versions. openHistorian is fixed in versions 2.8.580 and 2.8.585.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA openPDC (Grid Protection Alliance) Fixed in 2.9.477, 2.9.482
  • Fix · CNA openPDC (Docker image) (Grid Protection Alliance) Fixed in 2.9.477, 2.9.482
  • Fix · CNA openHistorian (Grid Protection Alliance) Fixed in 2.8.580, 2.8.585

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Grid Protection Alliance openPDC (Docker image) 2.9.477, 2.9.482

    6 records Highest priority Priority MEDIUM 3 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-70024 Missing authentication in Grid Protection Alliance openPDC and openHistorianPriority MEDIUM 43
    • TI-2026-70054 Hard-coded credentials in openPDC Docker image allow admin accessPriority MEDIUM 42
    • TI-2026-70023 Unsafe reflection in Grid Protection Alliance openPDC and openHistorianPriority LOW 36
    Show all 6 records →
  • Release ·

    Grid Protection Alliance openHistorian, openPDC 2.8.580, 2.8.585 and 2 more versions

    5 records Highest priority Priority MEDIUM 2 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-70024 Missing authentication in Grid Protection Alliance openPDC and openHistorianPriority MEDIUM 43
    • TI-2026-70023 Unsafe reflection in Grid Protection Alliance openPDC and openHistorianPriority LOW 36
    • TI-2026-70004 Missing authentication in openPDC and openHistorian data publisherPriority LOW 36
    Show all 5 records →

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-100730
  2. 2026-10-09 Alias added: GHSA-g2gc-jv32-q89f
  3. 2026-10-11 CISA SSVC decision points changed
  4. 2026-11-03 EPSS moved to the 50th–90th percentile

References

Other 2

  • TI-2026-70024 Missing authentication in Grid Protection Alliance openPDC and openHistorian CVSS 4.0HIGH 8.7
  • TI-2026-70054 Hard-coded credentials in openPDC Docker image allow admin access CVSS 4.0CRITICAL 9.3
  • TI-2026-70023 Unsafe reflection in Grid Protection Alliance openPDC and openHistorian CVSS 4.0HIGH 7.7
  • TI-2026-70004 Missing authentication in openPDC and openHistorian data publisher CVSS 4.0MEDIUM 6.9
  • TI-2026-70018 Server-side request forgery in openPDC and openHistorian CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences