Unrated severityNVD Advisory· Published Jul 10, 2026· Updated Jul 10, 2026
Grav CMS — Improper Handling of Highly Compressed Data in Installer::unZip()
CVE-2026-59193
Description
Grav is a file-based Web platform. Prior to 2.0.0, an authenticated admin.super user can crash Grav or fill the disk by uploading a specially crafted ZIP archive through the Direct Install tool because Installer::unZip calls ZipArchive::extractTo without limits on uncompressed size, entry count, or directory depth. This issue is fixed in version 2.0.0.
Affected products
2Patches
Vulnerability mechanics
References
3- github.com/getgrav/grav/commit/23d6f2adf4ce11889c088ac8557c8314baeef781mitrex_refsource_MISC
- github.com/getgrav/grav/releases/tag/2.0.0mitrex_refsource_MISC
- github.com/getgrav/grav/security/advisories/GHSA-2vcx-h8p2-9pg9mitrex_refsource_CONFIRM
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