Sandbox Bypass Affecting webpack package, versions >=5.0.0-alpha.0 <5.76.0


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.25% (66th percentile)

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  • Snyk ID SNYK-JS-WEBPACK-3358798
  • published 13 Mar 2023
  • disclosed 13 Mar 2023
  • credit Jack-Works

How to fix?

Upgrade webpack to version 5.76.0 or higher.

Overview

Affected versions of this package are vulnerable to Sandbox Bypass when ImportParserPlugin.js mishandles magic comments to allow cross-realm object access. An attacker who controls a property of an untrusted object can access the real global object.

CVSS Scores

version 3.1
Expand this section

Snyk

8.3 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    Low
Expand this section

NVD

9.8 critical
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Red Hat

9.1 critical