CVE-2026-59193

Grav CMS — Improper Handling of Highly Compressed Data in Installer::unZip()

Published Jul 10, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-2vcx-h8p2-9pg9 Grav CMS — Improper Handling of Highly Compressed Data in Installer::unZip()
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Getgrav
Getgrav grav
Vendors & Products Getgrav
Getgrav grav
Type Values Removed Values Added
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.
Title Grav CMS — Improper Handling of Highly Compressed Data in Installer::unZip()
Weaknesses CWE-409
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 10, 2026, 7:04 PM
Reserved
Jul 2, 2026, 7:53 PM
Status
Modified
Published
Jul 10, 2026, 5:17 PM
Modified
Oct 25, 2026, 3:10 PM