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.
Metrics
Affected Vendors & Products
References
History
Fri, 17 Jul 2026 18:30:00 +0000
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ssvc
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Fri, 17 Jul 2026 18:00:00 +0000
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Symfony
Symfony ux |
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Symfony
Symfony ux |
Fri, 17 Jul 2026 16:30:00 +0000
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| Description | 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. | |
| Title | Symfony UX: Denial of service in symfony/ux-live-component via unbounded batch action requests | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-07-17T17:26:18.929Z
Reserved: 2026-05-28T03:42:34.340Z
Link: CVE-2026-49209
Updated: 2026-07-17T17:26:15.591Z
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OpenCVE Enrichment
Updated: 2026-07-17T17:45:04Z