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CVE

CVE-2026-42607

Grav: Remote Code Execution (RCE) via Malicious Plugin ZIP Upload in Direct Install Feature
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CVE

CVE-2026-42607

Grav: Remote Code Execution (RCE) via Malicious Plugin ZIP Upload in Direct Install Feature

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42607.json, https://github.com/getgrav/grav/security/advisories/GHSA-w48r-jppp-rcfw, https://nvd.nist.gov/vuln/detail/CVE-2026-42607, https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663

Severity

9.1

CVSS Score
0
10

Basic Information

Base CVSS
9.1
EPSS Probability
0.03938%
EPSS Percentile
0.89878%
Introduced Version
0
Fix Available
5a12f9be8314682c8713e569e330f11805d0a663

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