CVE-2020-26282 Template Injection in BrowserUp Proxy
Unauthenticated attackers can achieve remote code execution by injecting Java EL expressions into BrowserUp Proxy.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-26282?
CVE-2020-26282 is a critical code injection vulnerability in browserup-proxy, published on 24 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
BrowserUp Proxy allows you to manipulate HTTP requests and responses, capture HTTP content, and export performance data as a HAR file. BrowserUp Proxy works well as a standalone proxy server, but it is especially useful when embedded in Selenium tests. A Server-Side Template Injection was identified in BrowserUp Proxy enabling attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. This has been patched in version 2.1.2.
Weakness: CWE-74
Which versions are affected by CVE-2020-26282?
2 open source packages ship an affected version, including com.browserup:browserup-proxy. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
com.browserup:browserup-proxy Maven | All versions | 2.1.2 |
com.browserup:browserup-proxy Maven | All versions | 2.1.2 |
Products include Browserup Browserup Proxy.
How do I fix CVE-2020-26282?
Upgrade com.browserup:browserup-proxy to 2.1.2 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2020-26282 being exploited?
There is no known exploitation of CVE-2020-26282 in the wild and no public exploit code.
Sources
Also known as GHSA-wmfg-55f9-j8hq.