CVE-2021-20721 File upload in KonaWiki2

Critical 9.8 Published 20 May 2021 Updated 3 Aug 2024

Remote attackers can upload arbitrary files, potentially executing PHP code, affecting KonaWiki2 users.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-20721?

CVE-2021-20721 is a critical vulnerability in kujirahand KonaWiki2, published on 20 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via unspecified vectors. If the file contains PHP scripts, arbitrary code may be executed.

Weakness: CWE-434

Which versions are affected by CVE-2021-20721?

It affects 1 product.

Products include Kujirahand Konawiki.

How do I fix CVE-2021-20721?

No fix has been published for CVE-2021-20721 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-20721 being exploited?

There is no known exploitation of CVE-2021-20721 in the wild and no public exploit code.

Sources

Also known as GHSA-8438-2753-v3v3.