CVE-2023-54339CWE-78

Webgrind 1.1 - Remote Command Execution (RCE) via dataFile Parameter

Critical · published January 13, 2026

CVSS v4.0
9.3
EPSS
2%
Percentile
77.0
In the wild
Unconfirmed
What it is

🚨 Unauthenticated attackers can run arbitrary commands on your server with just a twist of the dataFile parameter! 🔥 Think of this like an open delivery chute at a factory — anyone can just toss in whatever package they want, potentially triggering dangerous machinery inside. This vulnerability lets malicious actors inject harmful commands as easily as dropping a note in that chute. An attacker could gain complete control over your system, executing any command they want! This means they could access sensitive data, alter system files, or even plant malware — all without needing any credentials. It's a scenario that can lead to catastrophic data breaches and a monumental headache for anyone managing the server.

Put simply

Think of this like an open delivery chute at a factory — anyone can just toss in whatever package they want, potentially triggering dangerous machinery inside. This vulnerability lets malicious actors inject harmful commands as easily as dropping a note in that chute. Webgrind 1.1 has a remote command execution flaw that allows attackers to inject OS commands via the dataFile parameter in index.php, effectively turning it into a gateway for executing arbitrary commands.

What to do

An attacker could gain complete control over your system, executing any command they want! This means they could access sensitive data, alter system files, or even plant malware — all without needing any credentials. It's a scenario that can lead to catastrophic data breaches and a monumental headache for anyone managing the server. To secure your system, immediately upgrade Webgrind to version 1.2 or later. Additionally, consider implementing input validation to sanitize the dataFile parameter and prevent this exploitation in the future. Don't leave anything to chance! You've got this! By following these steps, you’ll be securing your server and boosting your security hero status! 🛡️

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
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
0.01697 · 77.0th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-01-13T22:52Z
EPSS history
Timeline
  • 13 JAN 22:52Z
    Webgrind 1.1 - Remote Command Execution (RCE) via dataFile Parameter
    cvelistv5