AUGUST 24, 2026
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Case File

CVE-2026-55878

HIGH · CVSS 7.8 EPSS 0.15% Public Exploit

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

CyberRota Analysis

AI-Generated

The vulnerability affects Symfony UX versions prior to 2.36.1 and 3.2.0, allowing the ux:install console command to potentially write attacker-controlled content to arbitrary locations or read sensitive local files due to improper handling of relative paths. This poses a significant risk of unauthorized file manipulation and data exposure. Organizations using affected versions should prioritize upgrading to the patched releases to mitigate these security risks.

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-2026-55878
Severity
HIGH
CVSS
7.8
EPSS
0.15%
Java

Original NVD Description

Symfony UX is a JavaScript ecosystem for Symfony. From 2.32.0 before 2.36.1 and from 3.0.0 before 3.2.0, the ux:install console command installs files from a recipe kit by copying paths listed in a copy-files map, and because Path::isRelative() accepts paths like ../../../etc, a crafted or compromised kit can write attacker-controlled content to arbitrary locations or read local files outside the recipe directory. This issue is fixed in versions 2.36.1 and 3.2.0.