CVE-2020-15119 DOM-based XSS in auth0-lock
An attacker can execute arbitrary scripts in the victim's browser via DOM-based XSS in the Auth0 Lock library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-15119?
CVE-2020-15119 is a medium-severity cross-site scripting vulnerability in auth0 lock, published on 19 Aug 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
In auth0-lock versions before and including 11.25.1, dangerouslySetInnerHTML is used to update the DOM. When dangerouslySetInnerHTML is used, the application and its users might be exposed to cross-site scripting (XSS) attacks.
Weakness: CWE-79
Which versions are affected by CVE-2020-15119?
2 open source packages ship an affected version, including auth0-lock. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
auth0-lock npm | All versions | 11.26.3 |
auth0-lock npm | All versions | 11.26.3 |
Products include Auth0 Lock.
How do I fix CVE-2020-15119?
Upgrade auth0-lock to 11.26.3 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-2020-15119 being exploited?
There is no known exploitation of CVE-2020-15119 in the wild and no public exploit code.
Other vulnerabilities in auth0 lock
Sources
Also known as GHSA-6gg3-pmm7-97xc.