GHSA-5634-rv46-48jf Cross-Site Scripting in bleach
Attackers can bypass HTML sanitization to execute arbitrary JavaScript in victim browsers via Cross-Site Scripting.
- 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-5634-rv46-48jf?
GHSA-5634-rv46-48jf is a cross-site scripting vulnerability in bleach, published on 3 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 bleach are vulnerable to Cross-Site Scripting. It is possible to bypass the package's HTML sanitization with payloads such as "<<script><</script>script>alert('xss');</<script><</script>script>" regardless of the passed options. This may allow attackers to execute arbitrary JavaScript in the victim's browser.
Recommendation
No fix is currently available. Consider using an alternative package until a fix is made available.
Which versions are affected by GHSA-5634-rv46-48jf?
2 open source packages ship an affected version, including bleach.
| Package | Affected | Fixed in |
|---|---|---|
bleach npm | From 0.0.0 | None |
bleach npm | From 0.0.0 | None |
How do I fix GHSA-5634-rv46-48jf?
No fix has been published for GHSA-5634-rv46-48jf 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-5634-rv46-48jf being exploited?
There is no known exploitation of GHSA-5634-rv46-48jf in the wild and no public exploit code.