CVE-2026-75827CWE-94code-injection

CVE-2026-75827

High · published August 18, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
58.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00859 · 58.1th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-08-18T16:19Z
References (3)
https://github.com/getgrav/grav/security/advisories/GHSA-f8wv-xp27-6gq7 · [email protected]https://www.vulncheck.com/advisories/grav-before-arbitrary-file-write-via-error-log · [email protected]https://github.com/getgrav/grav/security/advisories/GHSA-f8wv-xp27-6gq7 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 18 AUG 11:19Z
    Grav before 2.0.15 Arbitrary File Write via error_log
    cvelistv5