CVE-2020-26282

moderate-risk
Published 2020-12-24

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.

Do I need to act?

~
2.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: 5e8bb5f6e4dbed3d08313b3d6c273bea289f4a2f, 4b38e7a3e20917e5c3329d0d4e9590bed9d578ab
10
CVSS 10.0/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Browserup Proxy

Affected Vendors

Browserup

References (8)

Patch https://github.com/browserup/browserup-proxy/commit/4b38e7a3e20917e5c3329d0d4e95...
Third Party Advisory https://github.com/browserup/browserup-proxy/releases/tag/v2.1.2
Third Party Advisory https://github.com/browserup/browserup-proxy/security/advisories/GHSA-wmfg-55f9-...
Exploit https://securitylab.github.com/research/bean-validation-RCE
Patch https://github.com/browserup/browserup-proxy/commit/4b38e7a3e20917e5c3329d0d4e95...
Third Party Advisory https://github.com/browserup/browserup-proxy/releases/tag/v2.1.2
Third Party Advisory https://github.com/browserup/browserup-proxy/security/advisories/GHSA-wmfg-55f9-...
Exploit https://securitylab.github.com/research/bean-validation-RCE
44
/ 100
moderate-risk
Severity 33/34 · Critical
Exploitability 6/34 · Minimal
Exposure 5/34 · Minimal