VulnSocial

CVE-2026-8434Disclosure(concretecms / concrete_cms)

LOWCVSS 8.8 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescanMultiple(). 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.

concretecms CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-352CWE-1275

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • concrete_cms

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
concretecms
Products
concrete_cms

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-05-22: 2Technical Details · 2026-05-22: 205-22
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-8434 Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescanMultiple(). The Concrete CMS security team gav… https://www.cve.org/CVERecord?id=CVE-2026-8434 ----- Traducción: CVE-2026-8434 Con… http://infoflow.cloud`

    Post summary

    The post announces CVE-2026-8434, a CSRF vulnerability in Concrete CMS 9 prior to 9.5.0 affecting the rescanMultiple endpoint, but provides no PoC, exploit, or mitigation info.

    0000038
    79 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-8434 Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescanMultiple(). The Concrete CMS security team gav… https://www.cve.org/CVERecord?id=CVE-2026-8434

    Post summary

    The post announces CVE-2026-8434 as a CSRF vulnerability affecting Concrete CMS 9 before 9.5.0, providing technical details but no PoC, exploit, or claim of active exploitation.

    00000182
    57.5K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appconcretecmsconcrete_cms---

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