CVE-2026-8433— Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescan()
Possible ATT&CK Techniques 1AI
T1133 · External Remote ServicesAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Concrete CMS | Concrete CMS | 9.0≤ 9.5.0 | affected |
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I. Basic Information for CVE-2026-8433
Vulnerability Information
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Vulnerability Title
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescan()
Source: NVD (National Vulnerability Database)
Vulnerability Description
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescan(). 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:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan Drori (Tenzai) for reporting.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨站请求伪造(CSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Concrete CMS 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Concrete CMS是Concrete CMS开源的一个面向团队的开源内容管理系统。 Concrete CMS 9.5.0之前版本存在跨站请求伪造漏洞，该漏洞源于concrete/controllers/backend/file rescan()处容易受到跨站请求伪造攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Concrete CMS | Concrete CMS | 9.0 ~ 9.5.0 | - |
II. Public POCs for CVE-2026-8433
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Pages for CVE-2026-8433 (1)
- 9.5.1 Release Notes :: Concrete CMSrelease-notes
Same Patch Batch · Concrete CMS · 2026-05-21 · 41 CVEs total
| CVE-2026-8240 | Concrete CMS 9.5.0 and below is vulnerable to unauthenticated page metadata disclosure in | |
| CVE-2026-8432 | Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete | |
| CVE-2026-8416 | Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete | |
| CVE-2026-8412 | Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete | |
| CVE-2026-8237 | Concrete CMS 9.5.0 and below is vulnerable to IDOR in the`/ccm/frontend/conversations/mess | |
| CVE-2026-8434 | Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete | |
| CVE-2026-8435 | Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete | |
| CVE-2026-8414 | Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete | |
| CVE-2026-8239 | Concrete CMS 9.5.0 and below is vulnerable to IDOR in '/ccm/frontend/conversations/get_rat | |
| CVE-2026-8411 | Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete | |
| CVE-2026-8327 | Concrete CMS below 9.5.0 and below is vulnerable to password change without reauthorizatio | |
| CVE-2026-8236 | Concrete CMS 9.5.0 and below is vulnerable to IDOR combined with a missing authentication | |
| CVE-2026-8413 | Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete | |
| CVE-2026-8415 | Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete | |
| CVE-2026-8427 | Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete | |
| CVE-2026-8238 | Concrete CMS 9.5.0 and below is vulnerable to IDOR in '/ccm/frontend/conversations/message | |
| CVE-2026-8245 | Concrete CMS 9.5.0 and below is vulnerable to Reflected XSS in Legacy Pagination via HTML | |
| CVE-2026-7890 | Concrete CMS 9.5.0 is vulnerable to SSRF via RSS Displayer Block | |
| CVE-2026-8139 | Concrete CMS 9.5.0 and below is vulnerable to Stored XSS via external-link page cvName | |
| CVE-2026-8409 | Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete |
Showing top 20 of 41 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Concrete CMS
- CVE-2026-8353
Concrete CMS version 9.0 to 9.5.0 is vulnerable to Stored XS - CVE-2026-8347
Concrete CMS 9.5.0 and below is vulnerable to IDOR + wrong-a - CVE-2026-8340
Concrete CMS 9.5.0 and below is vulnerable to CSRF via Backe - CVE-2026-8139
Concrete CMS 9.5.0 and below is vulnerable to Stored XSS via - CVE-2026-7890
Concrete CMS 9.5.0 is vulnerable to SSRF via RSS Displayer B
Same vendor: Concrete CMS
- CVE-2026-8353
Concrete CMS version 9.0 to 9.5.0 is vulnerable to Stored XS - CVE-2026-8347
Concrete CMS 9.5.0 and below is vulnerable to IDOR + wrong-a - CVE-2026-8340
Concrete CMS 9.5.0 and below is vulnerable to CSRF via Backe - CVE-2026-8139
Concrete CMS 9.5.0 and below is vulnerable to Stored XSS via - CVE-2026-7890
Concrete CMS 9.5.0 is vulnerable to SSRF via RSS Displayer B
Same weakness: CWE-352
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calcom cal.diy cross-site request forgery - CVE-2026-41074
RT has broken CSRF protection for authenticated users - CVE-2026-40864
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V. Comments for CVE-2026-8433
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