VulnSocial

CVE-2026-8240Disclosure(concretecms / concrete_cms)

LOWCVSS 5.3 · MEDIUM

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 9.5.0 and below is vulnerable to unauthenticated page metadata disclosure across every page with a configured summary template, revealing the existence of private, draft, and restricted pages while leaking title, path, description, and author information. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 6.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks Winston Crooker for reporting.

concretecms CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-284

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-2026-8240 Concrete CMS 9.5.0 and below is vulnerable to unauthenticated page metadata disclosure across every page with a configured summary template, revealing the existence of … https://www.cve.org/CVERecord?id=CVE-2026-8240 ----- Traducción: CVE-2026-8240 Con… http://infoflow.cloud`

    Post summary

    The post announces CVE-2026-8240, noting that Concrete CMS 9.5.0 and earlier versions are vulnerable to unauthenticated page metadata disclosure and provides a link to the official CVE record.

    0000046
    79 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-8240 Concrete CMS 9.5.0 and below is vulnerable to unauthenticated page metadata disclosure across every page with a configured summary template, revealing the existence of … https://www.cve.org/CVERecord?id=CVE-2026-8240

    Post summary

    Concrete CMS versions 9.5.0 and earlier are vulnerable to unauthenticated disclosure of page metadata via configured summary templates, exposing the existence of pages.

    00000330
    57.5K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appconcretecmsconcrete_cms---

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