CVE-2026-31858
CraftCMS's `ElementSearchController` Affected by Blind SQL Injection
Description
The `ElementSearchController::actionSearch()` endpoint is missing the `unset()` protection that was added to ElementIndexesController in [GHSA-2453-mppf-46cj](https://github.com/craftcms/cms/security/advisories/GHSA-2453-mppf-46cj). 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.
How to fix CVE-2026-31858
To remediate CVE-2026-31858, upgrade the affected package to a fixed version below.
- —upgrade to 5.9.9 or later
Is CVE-2026-31858 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 5.0.0-RC1, < 5.9.9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |