CVE-2026-92591 (GCVE-0-2026-92591)

Vulnerability from cvelistv5 – Published: 2026-09-16 21:46 – Updated: 2026-09-17 13:26
VLAI
Title
Craft CMS 5.0.0 before 5.10.13 Environment Secret Exposure via Installer
Summary
Craft CMS 5.0.0 through 5.10.12 treats a database connection failure as meaning that Craft is not installed, which makes anonymous installer actions — including install/validate-site — reachable on an installed production site whenever PHP remains available but the configured MySQL endpoint does not. The action accepts a site name, serializes it through Site::getName(), and expands ${NAME} expressions using App::env(). An unauthenticated attacker who obtained a guest session cookie and matching CSRF token before the outage and whose session remains valid during it can submit a predictable variable name (for example Craft's conventional CRAFT_SECURITY_KEY) and receive its value, disclosing Craft secrets, process environment variables, $_SERVER entries, or PHP constants such as the security key, database credentials, or API keys. The issue requires an independently occurring database outage; the vulnerability itself provides no way to induce it. Fixed in 5.10.13.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 13:24 UTC
CWE
  • CWE-636 - Not Failing Securely ('Failing Open')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6373 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
craftcms cms Affected: 5.0.0 , < 5.10.13 (semver)
Unaffected: 5.10.13 (semver)
    cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-01 00:00
Credits
Crypto-Cat
Show details on NVD website
To clipboard 

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