CVE-2021-32091 Cross-site scripting in LocalStack
An XSS vulnerability in LocalStack allows attackers to execute arbitrary scripts in the context of the application.
- 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-2021-32091?
CVE-2021-32091 is a medium-severity cross-site scripting vulnerability in n/a, published on 7 May 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
A Cross-site scripting (XSS) vulnerability exists in StackLift LocalStack 0.12.6.
Weakness: CWE-79
Which versions are affected by CVE-2021-32091?
3 open source packages ship an affected version, including localstack. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
localstack PyPI | All versions to 0.12.10 | None |
localstack PyPI | All versions to 0.12.10 | None |
localstack PyPI | All versions | 0.12.6.1 |
Products include Localstack Localstack.
How do I fix CVE-2021-32091?
Upgrade localstack to 0.12.6.1 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-2021-32091 being exploited?
There is no known exploitation of CVE-2021-32091 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-37m5-42qp-4qpr, PYSEC-2021-102.