CVE-2020-35774 TwitterServer Cross-site Scripting via /histograms endpoint
Cross-site scripting vulnerability in TwitterServer allows attackers to inject scripts via the histograms endpoint in specific configurations.
- 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-2020-35774?
CVE-2020-35774 is a medium-severity cross-site scripting vulnerability in n/a, published on 29 Dec 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
server/handler/HistogramQueryHandler.scala in Twitter TwitterServer (aka twitter-server) before 20.12.0, in some configurations, allows XSS via the /histograms endpoint.
Weakness: CWE-79
Which versions are affected by CVE-2020-35774?
2 open source packages ship an affected version, including com.twitter:twitter-server_2.12. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
com.twitter:twitter-server_2.12 Maven | All versions | 20.12.0 |
com.twitter:twitter-server_2.12 Maven | All versions | 20.12.0 |
Products include Twitter Twitter-Server.
How do I fix CVE-2020-35774?
Upgrade com.twitter:twitter-server_2.12 to 20.12.0 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-2020-35774 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-35774 exists.
Public exploit code: 1 Nuclei template.
Sources
Also known as GHSA-3mqv-8gxg-pfm4.