CVE-2026-49209 (GCVE-0-2026-49209)

Vulnerability from cvelistv5 – Published: 2026-07-17 16:02 – Updated: 2026-07-17 17:26
VLAI
Title
Symfony UX: Denial of service in symfony/ux-live-component via unbounded batch action requests
Summary
Symfony UX is a JavaScript ecosystem for Symfony. From 2.5.0 until 2.36.0 and 3.1.0, Symfony\UX\LiveComponent\Controller\BatchActionController::__invoke() iterates over the client-supplied actions array and issues a full HttpKernel sub-request for each entry; because the array size is never bounded, an authenticated client can submit a single _batch request containing thousands of actions and exhaust CPU, memory, and database connections on the application server. This issue is fixed in versions 2.36.0 and 3.1.0.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-17 17:26 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7994 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
symfony ux Affected: >= 3.0.0, < 3.1.0
Affected: >= 2.5.0, < 2.36.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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