CVE-2026-49211 symfony CVE debrief

Who should care

Users of Symfony UX Autocomplete endpoint should apply the patches to prevent SQL injection attacks. This includes operators, platform administrators, vulnerability management teams, and security teams who need to ensure the endpoint is properly secured.

Technical summary

The Symfony UX Autocomplete endpoint is vulnerable to SQL injection due to improper escaping of SQL LIKE wildcards. An unauthenticated user can exploit this vulnerability to turn the public BaseEntityAutocompleteType endpoint into a broad matcher or blind boolean oracle against every column in default searchable_fields. The vulnerability was fixed in versions 2.36.0 and 3.1.0. This issue allows attackers to manipulate SQL queries, potentially leading to unauthorized data access or modifications. Users of Symfony UX Autocomplete endpoint should apply patches to upgrade to Symfony UX version 2.36.0 or 3.1.0 and restrict access to the BaseEntityAutocompleteType endpoint. Additionally, monitoring for suspicious activity on the endpoint and reviewing compensating controls for exposed systems are recommended until remediation is verified.

Defensive priority

Medium

Recommended defensive actions

• Apply patches to upgrade to Symfony UX version 2.36.0 or 3.1.0
• Restrict access to the BaseEntityAutocompleteType endpoint
• Monitor for suspicious activity on the endpoint
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-07-17T17:17:15.790Z and last modified on 2026-07-17T18:00:02.913Z. The NVD entry is currently Undergoing Analysis. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. The CVE record and NVD entry provide the most up-to-date information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.