CVE-2026-55878 Details
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.
A path traversal vulnerability has been identified in Symfony UX Toolkit versions 2.32.0 prior to 2.36.1 and 3.0.0 prior to 3.2.0. The issue arises in the 'ux:install' console command, which installs files from a recipe kit by copying paths listed in a 'copy-files' map. The vulnerability allows a crafted or compromised kit to write attacker-controlled content to arbitrary locations or read local files outside the recipe directory. This is possible because the path validation only checks if paths are relative, not if they stay within the intended directory. Exploitation could lead to overwriting important files, such as controllers or environment files, potentially allowing for code execution.
Users can upgrade to Symfony UX Toolkit versions 2.36.1 or 3.2.0 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 8, 2026CISA-ADP
Assessed Jul 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/symfony/ux/commit/7b4ddf3764bf269a1b5fde5bf03c4bce568694e4 | [email protected] | Source CodeVendor |
| https://github.com/symfony/ux/releases/tag/v2.36.1 | [email protected] | Release NotesVendor |
| https://github.com/symfony/ux/releases/tag/v3.2.0 | [email protected] | Release NotesVendor |
| https://github.com/symfony/ux/security/advisories/GHSA-p9xj-fpr2-jf2q | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Symfony UX | >= 2.32.0, < 2.36.1 (semver) >= 3.0.0, < 3.2.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 9, 2026 | CVE Modified | CISA-ADP |
| Jul 8, 2026 | New CVE Received | [email protected] |