CVE-2020-23849 Cross-site Scripting in jsoneditor
Attackers can execute arbitrary JavaScript in the tree mode of the jsoneditor library via stored XSS, potentially compromising user sessions.
- 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-2020-23849?
CVE-2020-23849 is a medium-severity cross-site scripting vulnerability in n/a, published on 11 Jan 2021. 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
Stored XSS was discovered in the tree mode of jsoneditor before 9.0.2 through injecting and executing JavaScript.
Weakness: CWE-79
Which versions are affected by CVE-2020-23849?
2 open source packages ship an affected version, including jsoneditor. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
jsoneditor npm | All versions | 9.0.2 |
jsoneditor npm | All versions | 9.0.2 |
Products include Jsoneditoronline Jsoneditor.
How do I fix CVE-2020-23849?
Upgrade jsoneditor to 9.0.2 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-2020-23849 being exploited?
There is no known exploitation of CVE-2020-23849 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-q854-j362-cfq9.