Vulnerabilities in pkg:maven/com.browserup/browserup-proxy
PACKAGECVE-2020-26282 is a HIGH (CVSS 10.0) server-side template injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')) affecting Browserup proxy libraries in the Maven ecosystem. The issue involves server-side template injection. Remediation is available by upgrading affected packages to version 2.1.2.
pkg:maven/com.browserup/browserup-proxy
Vulnerability advisories affecting package pkg:maven/com.browserup/browserup-proxy. Select an advisory below to view technical details or fixes.
| Advisory ID | CVE / NVD | Severity | Summary |
|---|---|---|---|
| GHSA-wmfg-55f9-j8hq | CVE-2020-26282 | HIGH | Server-Side Template Injection |
CVE-2020-26282 at a Glance
Security Impact
CVSS: 10.0
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N).
How to Fix CVE-2020-26282
To remediate this vulnerability, upgrade all affected Browserup proxy dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>com.browserup</groupId>
<artifactId>browserup-proxy</artifactId>
<version>2.1.2</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=com.browserupHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2020-26282, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=com.browserupAnalyze the terminal output to locate any version of Browserup proxy in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.1.2), your application is affected.
Note: The mvn dependency:tree -Dincludes=com.browserup command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'), where the product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. In Browserup proxy, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2020-26282 Affected Browserup proxy Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
com.browserup:browserup-proxy
|
Maven |
< 2.1.2
|
2.1.2
|
References
Frequently Asked Questions
What is CVE-2020-26282?
Which Browserup proxy versions are affected?
What version fixes CVE-2020-26282?
Is browserup-proxy affected?
What is the CVSS score of CVE-2020-26282?
What CWE is associated with CVE-2020-26282?
How can I check Maven dependencies for CVE-2020-26282?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-wmfg-55f9-j8hq",
"modified" : "2020-12-24T20:48:30Z",
"published" : "2020-12-24T20:49:34Z",
"aliases" : [ "CVE-2020-26282" ],
"summary" : "Server-Side Template Injection",
"details" : "### Impact\nA 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 assigned CVE-2020-26282.\n\n### Patches\nEffective Immediately, all users should upgrade to version 2.1.2 or higher.\n\n### Workarounds\nNone. \n\n### References\nhttps://securitylab.github.com/research/bean-validation-RCE\n\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [the BrowserUp Proxy repo](http://github.com/browserup/browserup-proxy)\n* Contact us via the [BrowserUp website](https://browserup.com) or email us at [support@browserup.com](mailto:support@browserup.com)",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "com.browserup:browserup-proxy"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2.1.2"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/browserup/browserup-proxy/security/advisories/GHSA-wmfg-55f9-j8hq"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-26282"
}, {
"type" : "WEB",
"url" : "https://github.com/browserup/browserup-proxy/commit/4b38e7a3e20917e5c3329d0d4e9590bed9d578ab"
}, {
"type" : "WEB",
"url" : "https://github.com/browserup/browserup-proxy/releases/tag/v2.1.2"
}, {
"type" : "WEB",
"url" : "https://securitylab.github.com/research/bean-validation-RCE"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-74" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2020-12-24T20:48:30Z",
"nvd_published_at" : "2020-12-24T21:15:00Z"
}
}