Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, the HMAC computed by Symfony\UX\LiveComponent\LiveComponentHydrator covered only sorted prop key/value pairs and did not include the component name, the slot identifier (props vs propsFromParent), or request context, allowing a signed blob minted for one component or slot to be replayed in another and set a read-only prop on a target component. This issue is fixed in versions 2.36.0 and 3.1.0.
References
| Link | Resource |
|---|---|
| https://github.com/symfony/ux/commit/a224b5af3e2e33ee14ac71356ae0e0877900a81c | 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-34w5-c283-j9fg | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
20 Jul 2026, 16:55
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/symfony/ux/commit/a224b5af3e2e33ee14ac71356ae0e0877900a81c - 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-34w5-c283-j9fg - Vendor Advisory | |
| First Time |
Symfony
Symfony ux |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
| CPE | cpe:2.3:a:symfony:ux:3.0.0:*:*:*:*:*:*:* cpe:2.3:a:symfony:ux:*:*:*:*:*:*:*:* |
17 Jul 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-17 17:17
Updated : 2026-07-20 16:55
NVD link : CVE-2026-49212
Mitre link : CVE-2026-49212
CVE.ORG link : CVE-2026-49212
JSON object : View
Products Affected
symfony
- ux
CWE
CWE-345
Insufficient Verification of Data Authenticity