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TI-2026-70004 Aliases CVE-2026-85479GHSA-xr5w-f3rm-m5gq

Missing authentication in openPDC and openHistorian data publisher

Priority LOW 36CWE-306Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

Grid Protection Alliance openPDC versions before 2.9.477 and before 2.9.482, including the openPDC Docker image, and openHistorian versions before 2.8.580 and before 2.8.585 are affected. The STTP-based data publisher accepts network connections without authentication in its default configuration (CWE-306). An unauthenticated network attacker can connect to this interface and exchange data with it.

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

Description from the CNA

The STTP-based data publisher on openPDC accepts network connections without authentication in its default configuration. An unauthenticated network attacker can connect to this interface and exchange data with it.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00252 16th 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
Partial

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

Update openPDC to version 2.9.477 or 2.9.482, the openPDC Docker image to version 2.9.477 or 2.9.482, and openHistorian to version 2.8.580 or 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-2026-70017 Untrusted data deserialization in openPDC and openHistorianPriority MEDIUM 49
    • 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
    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-2026-70017 Untrusted data deserialization in openPDC and openHistorianPriority MEDIUM 49
    • 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
    Show all 5 records →

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-85479
  2. 2026-10-09 Alias added: GHSA-xr5w-f3rm-m5gq
  3. 2026-10-11 Priority changed: MEDIUM → LOW
  4. 2026-10-11 CISA SSVC decision points changed

References

Other 2

  • TI-2026-70017 Untrusted data deserialization in openPDC and openHistorian CVSS 4.0CRITICAL 9.3
  • 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-2026-70018 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