SEPTEMBER 8, 2026
Live Feed
Back to database
Case File

CVE-2026-49212

HIGH · CVSS 7.5 EPSS 0.16% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-17 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

The vulnerability affects Symfony UX versions 2.8.0 to 2.36.0 and 3.1.0, where the HMAC validation is insufficient, enabling attackers to replay signed blobs across different components or slots. This could lead to unauthorized manipulation of read-only properties, potentially compromising application integrity. Organizations using affected versions should prioritize this issue to mitigate the risk of exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-49212
Severity
HIGH
CVSS
7.5
EPSS
0.16%
Java

Original NVD Description

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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)