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CVE-2026-18425VulnerabilityPublished Updated

Concrete CMS 9 before 9.5.3 authorized the dashboard sitemap reorder action

Source GCVE Database

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Not known to be exploited · CVSS 2.7 Low · fixed in 9.5.3 : update affected systems when convenient.

Data as of 31 Oct 2026, 20:20 UTC

CVSS 3.1 base score
2.7Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 9.5.3
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.

What to do

AI-suggested

A fix is available in Concrete CMS version 9.5.3. Users should upgrade to version 9.5.3 or later to ensure proper permission checks and CSRF protection are enforced for the sitemap reorder action.

Description

Concrete CMS 9 versions prior to 9.5.3 allow authenticated users with global sitemap access permission to reorder pages in the dashboard sitemap without verifying per-page edit permissions. This flaw permits changing the display order of pages they cannot edit, affecting navigation and breadcrumb rendering. The reorder action lacks CSRF token validation, enabling potential request forgery. The vulnerability has a low CVSS v4.0 score of 2.1.

References

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