What is CVE-2026-42607?

CVE-2026-42607 is a critical-severity vulnerability in Getgrav Grav, classified under Code Injection. CVSS score: 9.1/10. Published 2026-05-11.

How severe is CVE-2026-42607?

Critical severity. CVSS v3 base score is 9.1 out of 10.

RCE in Getgrav Grav

CVE-2026-42607

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.

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.039 (89.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Getgrav Grav — versions < 2.0.0-beta.2

Weakness classification (CWE)

CWE-94 — Code Injection

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-42607?: CVE-2026-42607 is a critical-severity vulnerability in Getgrav Grav, classified under Code Injection. CVSS score: 9.1/10. Published 2026-05-11.
How severe is CVE-2026-42607?: Critical severity. CVSS v3 base score is 9.1 out of 10.