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Critical

Security advisory

Type: advisorySources: OSVCVE: CVE-2020-26282

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.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2020-26282
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 12:37 UTC · Revision 1

Source evidence

CVE-2020-26282

core-osv · Original source

Published 24 Dec 2020, 21:15 UTC

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.

osv:CVE-2020-26282
Complete source record
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  "url": "https://osv.dev/vulnerability/CVE-2020-26282",
  "method": "structured",
  "payload": {
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    "title": "CVE-2020-26282",
    "summary": "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.",
    "evidence": "osv:CVE-2020-26282",
    "products": [],
    "severity": "critical",
    "structured": {
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          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
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      "provider": "osv",
      "references": [
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        "https://github.com/browserup/browserup-proxy/security/advisories/GHSA-wmfg-55f9-j8hq",
        "https://github.com/browserup/browserup-proxy/commit/4b38e7a3e20917e5c3329d0d4e9590bed9d578ab",
        "https://securitylab.github.com/research/bean-validation-RCE"
      ],
      "provider_metadata": {}
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        "value": "CVE-2020-26282",
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    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 388547,
  "published_at": "2020-12-24T21:15:12.727+00:00"
}