What is CVE-2026-104629?

CVE-2026-104629 is a high-severity vulnerability in Grid Protection Alliance Openhistorian, classified under Use of Externally-Controlled Input to Select Classes or Code (Unsafe Reflection). CVSS score: 8.8/10. Published 2026-10-09.

How severe is CVE-2026-104629?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Grid Protection Alliance Openhistorian

CVE-2026-104629

A component loading mechanism in openPDC and openHistorian will construct and run any specified type, which may be an invalid component to load. An attacker with an authenticated user account and the ability to place a file on the host filesystem can use this to run arbitrary constructor code, and this code runs with the privileges of the affected service account.

Published 2026-10-09 · last modified 2026-10-09.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-470 — Use of Externally-Controlled Input to Select Classes or Code (Unsafe Reflection)

References

Frequently asked questions

What is CVE-2026-104629?: CVE-2026-104629 is a high-severity vulnerability in Grid Protection Alliance Openhistorian, classified under Use of Externally-Controlled Input to Select Classes or Code (Unsafe Reflection). CVSS score: 8.8/10. Published 2026-10-09.
How severe is CVE-2026-104629?: High severity. CVSS v3 base score is 8.8 out of 10.