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Medium · 6.5 CVE-2026-61690 EUVD-2026-62534GHSA-928x-9mpw-8h56

Grav: Decompression Bomb via ZipArchiver - Missing Extraction Limits

Published Aug 19, 2026 · Updated Aug 25, 2026 · Assigned by GitHub_M

Description

Grav is a file-based Web platform. Prior to 2.0.1, Grav ZipArchiver::extract() in system/src/Grav/Common/Filesystem/ZipArchiver.php passes archives to ZipArchive::extractTo() without enforcing the system.gpm.archive uncompressed-size, file-count, or nesting-depth limits. Code using Archiver::create('zip') to extract an attacker-controlled archive can exhaust disk space or inodes and make the site unavailable. This issue is fixed in version 2.0.1.

Affected products

VendorProductAffectedFixed
getgrav grav < 2.0.1 —

References