Information disclosure in Symfony Ux

CVE-2026-49211

Symfony UX is a JavaScript ecosystem for Symfony. From 2.2.0 until 2.36.0 and 3.1.0, Symfony\UX\Autocomplete\Doctrine\EntitySearchUtil::addSearchClause() builds the LIKE expression used by the autocomplete endpoint by wrapping the client-supplied query in %...% without escaping SQL LIKE wildcards (%, _, \), allowing unauthenticated users to turn the public BaseEntityAutocompleteType endpoint into a broad matcher or blind boolean oracle against every column in default searchable_fields. This issue is fixed in versions 2.36.0 and 3.1.0.

Vulnerability class: Information Disclosure

EPSS: 0.005 (42.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

  • Symfony Ux — versions >= 3.0.0, < 3.1.0, >= 2.2.0, < 2.36.0, 3.0.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-49211?
CVE-2026-49211 is a high-severity vulnerability in Symfony Ux, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-07-17.
How severe is CVE-2026-49211?
High severity. CVSS v3 base score is 7.5 out of 10.