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CVE Vulnerability Details :
CVE-2026-49216
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-17 Jul, 2026 | 16:15
Updated At-17 Jul, 2026 | 16:15
Rejected At-
▼CVE Numbering Authority (CNA)
Symfony UX: XSS in symfony/ux-autocomplete via unescaped AJAX response data

Symfony UX is a JavaScript ecosystem for Symfony. From 2.2.0 until 2.36.0 and 3.1.0, the Stimulus controller in symfony/ux-autocomplete renders AJAX response items in _createAutocompleteWithRemoteData() by interpolating the text field into HTML template literals (<div>${item[labelField]}</div>) rather than text, allowing attacker-controlled markup from user-supplied dropdown values to execute in the browser of any user who opens an autocomplete widget backed by the same data. This issue is fixed in versions 2.36.0 and 3.1.0.

Affected Products
Vendor
symfony
Product
ux
Versions
Affected
  • >= 3.0.0, < 3.1.0
  • < 2.36.0
Problem Types
TypeCWE IDDescription
CWECWE-79CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Type: CWE
CWE ID: CWE-79
Description: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Metrics
VersionBase scoreBase severityVector
4.05.1MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Version: 4.0
Base score: 5.1
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/symfony/ux/security/advisories/GHSA-mwqm-4fw3-cjvr
x_refsource_CONFIRM
https://github.com/symfony/ux/commit/842ae54bc74de389299f975f01aafae272cb0019
x_refsource_MISC
https://github.com/symfony/ux/releases/tag/v2.36.0
x_refsource_MISC
https://github.com/symfony/ux/releases/tag/v3.1.0
x_refsource_MISC
Hyperlink: https://github.com/symfony/ux/security/advisories/GHSA-mwqm-4fw3-cjvr
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/symfony/ux/commit/842ae54bc74de389299f975f01aafae272cb0019
Resource:
x_refsource_MISC
Hyperlink: https://github.com/symfony/ux/releases/tag/v2.36.0
Resource:
x_refsource_MISC
Hyperlink: https://github.com/symfony/ux/releases/tag/v3.1.0
Resource:
x_refsource_MISC
Details not found