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CVE-2026-42607 is an improper code generation/control vulnerability in Grav versions before 2.0.0-beta.2. Grav's Direct Install tool blocks direct PHP-file uploads but does not inspect the contents of uploaded ZIP archives. An authenticated administrative user can upload a crafted archive containing a malicious plugin; when the archive is extracted and installed, attacker-controlled PHP can execute on the server.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A previously addressed Grav CMS Zip Slip vulnerability. It is mentioned as background to clarify that its path-traversal fix does not remediate the separate archive size, entry-count, and directory-depth issues in CVE-2026-59193.
A remote code execution vulnerability in Grav's Direct Install tool that allows an authenticated administrator to upload a crafted ZIP archive containing malicious PHP code or a web shell.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.