CVE-2026-42607

Name: CVE-2026-42607
Creator: NVD / NIST
Published: 2026-05-11T16:17:32.72+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 3.93%

Last modified Jun 17, 2026

CVE-2026-42607 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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. EPSS estimates a 3.93% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

3.93%

89.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

References

Timeline

Published: May 11, 2026
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2026-42607?

How severe is CVE-2026-42607?

CVE-2026-42607 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 3.93% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42607?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-42607?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST