CVE-2023-4157 Improper Neutralization of Special Elements in Output Used by a Downstream Component in omeka/omeka-s

Medium 5.2 Published 4 Aug 2023 Updated 9 Oct 2024

Attackers can inject malicious scripts into Omeka S, potentially executing code or stealing data from users.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2023-4157?

CVE-2023-4157 is a medium-severity cross-site scripting vulnerability in omeka/omeka-s, published on 4 Aug 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in GitHub repository omeka/omeka-s prior to version 4.0.3.

Weakness: CWE-74

Which versions are affected by CVE-2023-4157?

2 open source packages ship an affected version, including omeka/omeka-s. It affects 1 product.

Package	Affected	Fixed in
`omeka/omeka-s` Packagist	All versions	`4.0.3`
`omeka/omeka-s` Packagist	All versions	`4.0.3`

Products include Omeka Omeka S.

How do I fix CVE-2023-4157?

Upgrade omeka/omeka-s to 4.0.3 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-4157 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4157 exists.

Sources

Also known as GHSA-fxc5-pr68-2px3.