CVE-2026-31858: CraftCMS's `ElementSearchController` Affected by Blind SQL Injection

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-11 · updated 2026-06-17
Weakness: CWE-89

Description

Craft is a content management system (CMS). The ElementSearchController::actionSearch() endpoint is missing the unset() protection that was added to ElementIndexesController in CVE-2026-25495. The exact same SQL injection vulnerability (including criteria[orderBy], the original advisory vector) works on this controller because the fix was never applied to it. Any authenticated control panel user (no admin required) can inject arbitrary SQL via criteria[where], criteria[orderBy], or other query properties, and extract the full database contents via boolean-based blind injection. Users should update to the patched 5.9.9 release to mitigate the issue.

Affected products

craftcms cms: from 5.0.1 before 5.9.9; 5.0.0, 5.0.0-rc1 — fixed in 5.9.9

How to fix

Upgrade to a fixed version: craftcms cms 5.9.9. Check the vendor advisory for mitigations.

References

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