CVE-2021-35238 Stored XSS through URL POST parameter in CreateExternalWebsite Vulnerability

What is CVE-2021-35238?

CVE-2021-35238 is a medium-severity cross-site scripting vulnerability in SolarWinds Orion Platform, published on 1 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

User with Orion Platform Admin Rights could store XSS through URL POST parameter in CreateExternalWebsite website.

Weakness: CWE-79

Which versions are affected by CVE-2021-35238?

It affects 1 product.

Products include Solarwinds Orion Platform.

How do I fix CVE-2021-35238?

No fix has been published for CVE-2021-35238 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-2021-35238 being exploited?

There is no known exploitation of CVE-2021-35238 in the wild and no public exploit code.

Other vulnerabilities in SolarWinds Orion Platform

• CVE-2020-10148 SolarWinds Orion Authentication Bypass Exploited Critical 9.8
• CVE-2021-27258 Privilege escalation in Orion Platform Critical 9.8
• CVE-2021-25274 Deserialization in n/a Critical 9.8
• CVE-2019-9546 Privilege escalation in n/a Critical 9.8
• CVE-2020-13169 Cross-site scripting in n/a Critical 9.0

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-p94g-5v88-v8wc.