CVE-2023-6379 Cross-site Scripting in Alkacon Software OpenCms
Remote attackers can inject JavaScript into the Mercury template to hijack user sessions in OpenCms.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-6379?
CVE-2023-6379 is a medium-severity cross-site scripting vulnerability in Alkacon Open CMS, published on 13 Dec 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Cross-site scripting (XSS) vulnerability in Alkacon Software Open CMS, affecting versions 14 and 15 of the 'Mercury' template. This vulnerability could allow a remote attacker to send a specially crafted JavaScript payload to a victim and partially take control of their browsing session.
Weakness: CWE-79
Which versions are affected by CVE-2023-6379?
2 open source packages ship an affected version, including org.opencms:opencms-core. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.opencms:opencms-core Maven | From 14.0.0 | 16.0.0 |
org.opencms:opencms-core Maven | From 14.0.0 | 16.0.0 |
Products include Alkacon Opencms.
How do I fix CVE-2023-6379?
Upgrade org.opencms:opencms-core to 16.0.0 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-2023-6379 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6379 exists.
Public exploit code: 1 Nuclei template.
Other vulnerabilities in Alkacon Open CMS
Sources
Also known as GHSA-w62v-q77r-66cc.