Improper Verification of Source of a Communication Channel Affecting @theia/plugin-ext package, versions <1.18.0


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.09% (39th percentile)

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  • Snyk ID SNYK-JS-THEIAPLUGINEXT-1921089
  • published 16 Nov 2021
  • disclosed 15 Nov 2021
  • credit Unknown

How to fix?

Upgrade @theia/plugin-ext to version 1.18.0 or higher.

Overview

@theia/plugin-ext is a Theia - Plugin Extension

Affected versions of this package are vulnerable to Improper Verification of Source of a Communication Channel via the postMessage() function, which allows Webview contents to be hijacked.

CVSS Scores

version 3.1
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Snyk

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

NVD

6.1 medium