CVE-2019-14862 XSS in knockout
An XSS vulnerability in the Knockout JavaScript library allows attackers to inject malicious scripts into web applications using it.
- 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-2019-14862?
CVE-2019-14862 is a medium-severity cross-site scripting vulnerability in Oracle Business Intelligence, published on 2 Jan 2020. 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
There is a vulnerability in knockout before version 3.5.0-beta, where after escaping the context of the web application, the web application delivers data to its users along with other trusted dynamic content, without validating it.
Weakness: CWE-79
Which versions are affected by CVE-2019-14862?
2 open source packages ship an affected version, including knockout. It affects 5 products.
| Package | Affected | Fixed in |
|---|---|---|
knockout npm | All versions | 3.5.0 |
knockout npm | All versions | 3.5.0 |
Products include Knockoutjs Knockout, Oracle Business Intelligence, Oracle Goldengate, Redhat Decision Manager, Redhat Process Automation.
How do I fix CVE-2019-14862?
Upgrade knockout to 3.5.0 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-2019-14862 being exploited?
There is no known exploitation of CVE-2019-14862 in the wild and no public exploit code.
Sources
Also known as CLSA-2026-1772583208, CLSA-2026-1772583210, CLSA-2026-1773965927, DEBIAN-CVE-2019-14862, GHSA-vcjj-xf2r-mwvc.