High severity7.8NVD Advisory· Published Jul 8, 2026· Updated Jul 10, 2026
CVE-2026-55878
CVE-2026-55878
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
symfony/ux-toolkitPackagist | >= 2.32.0, < 2.36.1 | 2.36.1 |
symfony/ux-toolkitPackagist | >= 3.0.0, < 3.2.0 | 3.2.0 |
Affected products
1- Range: 2.32.0 < 2.36.1, 3.0.0 < 3.2.0
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-p9xj-fpr2-jf2qghsaADVISORY
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony/ux-toolkit/CVE-2026-55878.yamlghsaWEB
- github.com/symfony/ux/security/advisories/GHSA-p9xj-fpr2-jf2qnvdWEB
- github.com/symfony/ux/commit/7b4ddf3764bf269a1b5fde5bf03c4bce568694e4nvd
- github.com/symfony/ux/releases/tag/v2.36.1nvd
- github.com/symfony/ux/releases/tag/v3.2.0nvd
News mentions
0No linked articles in our index yet.