CVE-2020-1340 Cross-site scripting in NuGetGallery
Attackers can inject malicious scripts into NuGet package metadata, potentially compromising user sessions or executing code in the NuGetGallery web interface.
- 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
- None listed
What is CVE-2020-1340?
CVE-2020-1340 is a medium-severity cross-site scripting vulnerability in Microsoft NuGetGallery, published on 9 Jun 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
A spoofing vulnerability exists when the NuGetGallery does not properly sanitize input on package metadata values, aka 'NuGetGallery Spoofing Vulnerability'.
Weakness: CWE-79
Which versions are affected by CVE-2020-1340?
It affects 1 product.
Products include Microsoft Nugetgallery.
How do I fix CVE-2020-1340?
No fix has been published for CVE-2020-1340 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 CVE-2020-1340 being exploited?
There is no known exploitation of CVE-2020-1340 in the wild and no public exploit code.
Other vulnerabilities in Microsoft NuGetGallery
Sources
Also known as GHSA-jfw3-6x4x-gprc.