CVE-2021-20721

KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via unspecified vectors

published May 20, 2021

CVSS
—
EPSS
2%
Percentile
74.4
In the wild
Unconfirmed
What it is

⚠️ A remote attacker can upload any file they want in KonaWiki2 versions before 2.2.4! Imagine someone rocking up to a venue and delivering a package, but nobody checks what’s inside. 📦 It's like letting a delivery driver drop off any package without checking the label — if they send a sneaky trojan horse, they could wreak havoc from within! If an attacker uploads a PHP script disguised as a harmless file, they could execute arbitrary code on your server. This means they could potentially take over your system, steal sensitive information, or even bring down your site — absolutely devastating!

Put simply

It's like letting a delivery driver drop off any package without checking the label — if they send a sneaky trojan horse, they could wreak havoc from within! This vulnerability in KonaWiki2 allows unauthorized file uploads via unspecified vectors. If those files are PHP scripts, attackers can execute malicious code, leading to serious security breaches.

What to do

If an attacker uploads a PHP script disguised as a harmless file, they could execute arbitrary code on your server. This means they could potentially take over your system, steal sensitive information, or even bring down your site — absolutely devastating! Upgrade to KonaWiki2 version 2.2.4 or later immediately to close this gap. Regularly audit your file upload processes and implement strict file type restrictions to bolster your defenses. You've got this! Take these steps, and you'll secure your setup in no time. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01522 · 74.4th percentile
Published
2021-05-20T01:15Z
EPSS history
Timeline
  • 20 MAY 01:15Z
    KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via unspecified vectors
    cvelistv5