Open-source package vulnerability · Composer (PHP)

GHSA-fwwx-3362-3947: Duplicate Advisory: Grav: Blueprint dynamic-data bare-function branch is denylist-gated and omits error_log, giving arbitrary file write

criticalCVSS 4.0 9.3 · 3.1 8.8

This advisory was withdrawn on Sep 17, 2026. The publisher no longer considers it a valid vulnerability.

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-f8wv-xp27-6gq7. This link is maintained to preserve external references. Original Description Grav before 2.0.15 contains an arbitrary file write vulnerability in the Blueprint dynamic-data bare-function validation that uses an incomplete denylist instead of a positive allowlist.

Published Aug 18, 2026 · Updated Sep 17, 2026

Affected packages

getgrav/grav

Ecosystem: Composer (PHP)
Affected: < 2.0.15
Fixed in: No patched version yet
Check: composer show getgrav/grav

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-f8wv-xp27-6gq7. This link is maintained to preserve external references.

Original Description

Grav before 2.0.15 contains an arbitrary file write vulnerability in the Blueprint dynamic-data bare-function validation that uses an incomplete denylist instead of a positive allowlist. Attackers with page-edit or blueprint-config access can invoke the error_log function through a data directive to append PHP payloads to web-accessible files, achieving remote code execution.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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