Critical severity9.1GHSA Advisory· Published May 11, 2026· Updated May 12, 2026

CVE-2026-42607

Description

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, an authenticated user with administrative privileges can achieve Remote Code Execution (RCE) by uploading a specially crafted ZIP file through the "Direct Install" tool. While the system attempts to block direct .php file uploads, it fails to inspect the contents of uploaded ZIP archives. Once a malicious plugin is extracted, it can execute arbitrary PHP code or drop a persistent web shell on the server. This vulnerability is fixed in 2.0.0-beta.2.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
getgrav/gravPackagist	< 2.0.0-beta.2	2.0.0-beta.2

Affected products

Getgrav/GravGHSA
Range: < 2.0.0-beta.2
ghsa-coords
pkg:composer/getgrav/grav
Range: < 2.0.0-beta.2

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-w48r-jppp-rcfwghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-42607ghsaADVISORY
github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663nvdWEB
github.com/getgrav/grav/security/advisories/GHSA-w48r-jppp-rcfwnvdWEB

News mentions

No linked articles in our index yet.

cvss	0.591
epss	0.003
exploit	0.030
kev	0.000
patch	-0.070
ransomware	0.000