GHSA-pqpp-2363-649v Cross-Site Scripting in buttle
Attackers can execute arbitrary JavaScript via malicious markdown files due to unsanitized HTML output in the buttle library.
- 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
- None listed
What is GHSA-pqpp-2363-649v?
GHSA-pqpp-2363-649v is a cross-site scripting vulnerability in buttle, published on 2 Sep 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
All versions of buttle are vulnerable to Cross-Site Scripting. Due to misconfiguration of its rendering engine, buttle does not sanitize the HTML output allowing attackers to run arbitrary JavaScript when processing malicious markdown files.
Recommendation
No fix is currently available. Consider using an alternative module until a fix is made available.
Which versions are affected by GHSA-pqpp-2363-649v?
2 open source packages ship an affected version, including buttle.
| Package | Affected | Fixed in |
|---|---|---|
buttle npm | All versions | None |
buttle npm | All versions | None |
How do I fix GHSA-pqpp-2363-649v?
No fix has been published for GHSA-pqpp-2363-649v yet. Limit exposure of the affected software until one is available.
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 GHSA-pqpp-2363-649v being exploited?
There is no known exploitation of GHSA-pqpp-2363-649v in the wild and no public exploit code.