CVE-2026-85387: Concrete CMS before 9.5.4

CVE-2026-85387. EPSS 0.00261 (percentile 0.17021), scored 24-Oct-2026. Fixed version: 66d3f3d614e26e4b7955b967fed133a8acdb6820.

Affected technology

Concrete CMS · before 9.5.4
Vendor not specified by the source

Component: Not specified by the source

Attack conditions (OSV, CVSS 4.0): Network (remote) · Low privileges required · Active user interaction

What an attacker can do

A deactivated user can retain OAuth-authenticated REST API access. OSV’s CVSS 4.0 assessment rates confidentiality and integrity impact as low; availability impact as none.

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:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N · OSV.dev
EPSS: 0.00261 · percentile 0.17021 · 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-2026-85387.html