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CVE-2026-49211— Symfony UX: Information exposure via unescaped LIKE wildcards in EntitySearchUtil

Quick assessment

Affected
symfony ux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Symfony ux是Symfony组织开源的一个Symfony的JavaScript生态系统。 Symfony UX 2.2.0至2.36.0版本和3.0.0至3.1.0之前版本存在信息泄露漏洞，该漏洞源于在构建LIKE表达式时未转义SQL LIKE通配符，可能导致未经身份验证的用户将公共BaseEntityAutocompleteType端点变成宽泛匹配器或针对默认searchable_fields中每一列的盲注布尔型判断器。

AI Predicted 9.8 Difficulty: Easy EPSS 0.53% · P45

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
symfony ux >= 3.0.0, < 3.1.0 affected
>= 2.2.0, < 2.36.0 affected
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I. Basic Information for CVE-2026-49211

Vulnerability Information
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Vulnerability Title
Symfony UX: Information exposure via unescaped LIKE wildcards in EntitySearchUtil
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Symfony UX 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Symfony ux是Symfony组织开源的一个Symfony的JavaScript生态系统。 Symfony UX 2.2.0至2.36.0版本和3.0.0至3.1.0之前版本存在信息泄露漏洞，该漏洞源于在构建LIKE表达式时未转义SQL LIKE通配符，可能导致未经身份验证的用户将公共BaseEntityAutocompleteType端点变成宽泛匹配器或针对默认searchable_fields中每一列的盲注布尔型判断器。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
symfony ux >= 3.0.0, < 3.1.0 -

II. Public POCs for CVE-2026-49211

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III. Intelligence Information for CVE-2026-49211

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Patches & Fixes for CVE-2026-49211 (3)

Vendor Advisories for CVE-2026-49211 (1)

Same Patch Batch · symfony · 2026-07-17 · 7 CVEs total

CVE-2026-49209 Symfony UX: Denial of service in symfony/ux-live-component via unbounded batch action requ
CVE-2026-49210 Symfony UX: XSS in symfony/ux-live-component via attacker-controlled child component tag
CVE-2026-49215 Symfony UX: CSRF Protection Bypass in symfony/ux-live-component — Accept Header is CORS-Sa
CVE-2026-49208 Symfony UX: Format-less date LiveProps parsed with the permissive DateTime constructor
CVE-2026-49212 Symfony UX: LiveComponentHydrator HMAC checksum lacks component and slot binding
CVE-2026-49216 Symfony UX: XSS in symfony/ux-autocomplete via unescaped AJAX response data

IV. Related Vulnerabilities

Same product: ux
Same vendor: symfony
Same weakness: CWE-200