CVE-2019-11818 Alkacon OpenCMS XSS via New User module
Stored XSS in OpenCMS allows attackers to inject JavaScript via user profile fields, potentially leading to session hijacking or malicious actions.
- 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-2019-11818?
CVE-2019-11818 is a medium-severity cross-site scripting vulnerability in n/a, published on 8 May 2019. 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
Alkacon OpenCMS v10.5.4 and before is affected by stored cross site scripting (XSS) in the module New User (/opencms/system/workplace/admin/accounts/user_new.jsp). This allows an attacker to insert arbitrary JavaScript as user input (First Name or Last Name), which will be executed whenever the affected snippet is loaded.
Weakness: CWE-79
Which versions are affected by CVE-2019-11818?
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 | All versions | 11.0.0 |
org.opencms:opencms-core Maven | All versions | 11.0.0 |
Products include Alkacon Opencms.
How do I fix CVE-2019-11818?
Upgrade org.opencms:opencms-core to 11.0.0 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-2019-11818 being exploited?
There is no known exploitation of CVE-2019-11818 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-c8j6-gqq8-4prj.