CVE-2026-59193
Grav CMS — Improper Handling of Highly Compressed Data in Installer::unZip()
MEDIUM 6.9EPSS 0.6%
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
- getgrav · grav
- CVSS v4.0 GITHUB
- 6.9 MEDIUM
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v4.0 GitHub
- 6.9 MEDIUM
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 - CVSS v3.1 NVD
- 4.9 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.60% chance of exploitation in the next 30 days, 48th percentile
- Published
- 2026-07-10
Proof-of-concept exploits (1)
Security advisories
- getgrav/grav/security/advisories/GHSA-2vcx-h8p2-9pg9
- getgrav/grav/commit/23d6f2adf4ce11889c088ac8557c8314baeef781