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Back to active CVEs
Medium · CVSS 6.9CVE-2026-85479

Grid Protection Alliance openPDC and openHistorian Missing Authentication for Critical FunctionCVE-2026-85479

Answer in brief

CVE-2026-85479 records a Medium severity (CVSS 6.9) vulnerability in Grid Protection Alliance openPDC and openHistorian Missing Authentication for Critical Function. The current sources do not mark it as known exploited. The current feed maps Grid Protection Alliance/openHistorian (generic), Grid Protection Alliance/openPDC (generic), Grid Protection Alliance/openPDC (Docker image) (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 9, 2026Updated Oct 9, 2026Source checked Oct 9, 2026First seen by HOL Oct 9, 2026Material review Oct 9, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.9
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Grid Protection Alliance/openHistorian (generic), Grid Protection Alliance/openPDC (generic), Grid Protection Alliance/openPDC (Docker image) (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Grid Protection Alliance/openHistoriangeneric>=0 <2.8.580 || >=0 <2.8.5852.8.580, 2.8.585
Grid Protection Alliance/openPDCgeneric>=0 <2.9.477 || >=0 <2.9.4822.9.477, 2.9.482
Grid Protection Alliance/openPDC (Docker image)generic>=0 <2.9.477 || >=0 <2.9.4822.9.477, 2.9.482

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Grid Protection Alliance/openHistorian, Grid Protection Alliance/openPDC, Grid Protection Alliance/openPDC (Docker image).
  2. 2Review the reported fix. Source-reported solution: Grid Protection Alliance updated the default configuration to bind this interface to the local loopback address only. This change applies to new installations; existing installations upgraded from an earlier version retain their prior configuration and will not receive the new default automatically. Operators should verify their configuration explicitly and update the interface binding if it is still set to accept connections on all interfaces.

Evidence timeline and material changes

  1. Published upstream

    Oct 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 9, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • CISA Known Exploited Vulnerabilities catalogcisa.gov
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Grid Protection Alliance openPDC (Docker image) Use of Hard-coded CredentialsSame grid protection alliance/openpdc (docker image) package
  • Red Lion Controls N-Tron 700 Series Missing Authentication for Critical FunctionAlso CWE-306
  • Denial of Service via Eager Array Allocation During Deserialization in GuavaSame generic ecosystem
  • Reachable assertion in illumos bhyve REP string instruction emulation allows guest to panic hostSame generic ecosystem
  • KodExplorer < 4.55 Path Traversal via unzip_pre_name() ZIP ExtractionSame generic ecosystem
  • SmarterMail < Build 9777 SysAdmin Remote Code Execution via Volume MountSame generic ecosystem

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-306
Source
CVE List V5
Source checked
Oct 9, 2026
References
2 linked sources
Open source record