NVD Vulnerability Detail
Search Exploit, PoC
CVE-2026-8347
Summary

Concrete CMS 9.5.0 and below is vulnerable to IDOR + wrong-authorization-level in the Express association Reorder dialog.  This can cause Cross-entity state tampering with view-only permission on one entry. To be affected, a website has to be using express and relying on express entity ordering. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Winston Crooker for reporting.

Publication Date May 23, 2026, 12:16 a.m.
Registration Date May 27, 2026, 4:05 a.m.
Last Update May 23, 2026, 4:16 a.m.
CVSS3.1 : MEDIUM
スコア 4.3
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC)
攻撃に必要な特権レベル(PR)
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C) なし
完全性への影響(I)
可用性への影響(A) なし
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* 9.5.1
Related information, measures and tools
Common Vulnerabilities List