CVE-2023-6623

Essential Blocks < 4.4.3 - Unauthenticated Local File Inclusion

Critical · published January 15, 2024

Patch now

High probability of exploitation

CVSS calls it critical at 9.8. It sits in the 98.9th percentile for exploit probability.

CVSS v3.1
9.8
EPSS
51%
Percentile
98.9
In the wild
Unconfirmed
What it is

🚨 A sneaky flaw in the Essential Blocks WordPress plugin lets attackers overwrite local variables over the REST API, leaving your site wide open! 🔥 Think of it like a chef being able to change the ingredients of a dish while it’s being prepared, without anyone noticing — they can slip in something dangerous while the diners are unaware! If exploited, an attacker could manipulate your site’s templates, potentially leading to Local File Inclusion attacks. This means they could access sensitive files on your server, and if those files contain credentials or configuration details, the fallout could be absolutely devastating!

Put simply

Think of it like a chef being able to change the ingredients of a dish while it’s being prepared, without anyone noticing — they can slip in something dangerous while the diners are unaware! This vulnerability allows unauthenticated attackers to overwrite local variables in the Essential Blocks plugin templates over the REST API, bypassing expected security measures.

What to do

If exploited, an attacker could manipulate your site’s templates, potentially leading to Local File Inclusion attacks. This means they could access sensitive files on your server, and if those files contain credentials or configuration details, the fallout could be absolutely devastating! Immediately update the Essential Blocks plugin to version 4.4.3 or later. Review your REST API settings and ensure that only authenticated users can access sensitive endpoints. It's also wise to audit your server for any potential breaches. You've got this! Follow these steps and you'll have your security tightened up in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.50673 · 98.9th percentile
Published
2024-01-15T15:10Z
EPSS history
Timeline
  • 15 JAN 15:10Z
    Essential Blocks < 4.4.3 - Unauthenticated Local File Inclusion
    cvelistv5