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.
References
| Link | Resource |
|---|---|
| https://github.com/symfony/ux/commit/95e878d5257f13d6d652ca95e3ef6bb0934d674f | Patch |
| https://github.com/symfony/ux/releases/tag/v2.36.0 | Release Notes |
| https://github.com/symfony/ux/releases/tag/v3.1.0 | Release Notes |
| https://github.com/symfony/ux/security/advisories/GHSA-mm82-c99c-h2cf | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
20 Jul 2026, 16:56
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:symfony:ux:3.0.0:*:*:*:*:*:*:* cpe:2.3:a:symfony:ux:*:*:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
| First Time |
Symfony
Symfony ux |
|
| References | () https://github.com/symfony/ux/commit/95e878d5257f13d6d652ca95e3ef6bb0934d674f - Patch | |
| References | () https://github.com/symfony/ux/releases/tag/v2.36.0 - Release Notes | |
| References | () https://github.com/symfony/ux/releases/tag/v3.1.0 - Release Notes | |
| References | () https://github.com/symfony/ux/security/advisories/GHSA-mm82-c99c-h2cf - Vendor Advisory |
17 Jul 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-17 17:17
Updated : 2026-07-20 16:56
NVD link : CVE-2026-49209
Mitre link : CVE-2026-49209
CVE.ORG link : CVE-2026-49209
JSON object : View
Products Affected
symfony
- ux
CWE
CWE-770
Allocation of Resources Without Limits or Throttling