CVE-2026-8426: Concrete CMS 9.5.0 and below

CVE-2026-8426. EPSS 0.00262 (percentile 0.17141), scored 24-Oct-2026. Fixed version: 92bae566b9ec573cfb3017fcbb6db454a6586997.

Affected technology

Concrete CMS · 9.5.0 and below
Vendor not specified by the source

Component: Not specified by the source

Attack conditions (OSV, CVSS 4.0): Network (remote) · No privileges required · Active user interaction

What an attacker can do

OSV’s CVSS 4.0 assessment rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 25-Oct-2026 10:22 UTC

CCR priority: 0.1 /100 (P5)
CVSS 4.0: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N · OSV.dev
EPSS: 0.00262 · percentile 0.17141 · 2026-10-24
KEV: no

Provenance

OSV.dev · Source record · observed 2026-10-25 01:59:11.642217+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-8426.html