CVE-2021-42762 Affecting wpewebkit package, versions <2.34.1-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.5% (39th percentile)

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  • Snyk IDSNYK-ECHOLATEST-WPEWEBKIT-18017068
  • published19 Jul 2026
  • disclosed20 Oct 2021

Introduced: 20 Oct 2021

CVE-2021-42762  (opens in a new tab)

How to fix?

Upgrade Echo:latest wpewebkit to version 2.34.1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wpewebkit package and not the wpewebkit package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

BubblewrapLauncher.cpp in WebKitGTK and WPE WebKit before 2.34.1 allows a limited sandbox bypass that allows a sandboxed process to trick host processes into thinking the sandboxed process is not confined by the sandbox, by abusing VFS syscalls that manipulate its filesystem namespace. The impact is limited to host services that create UNIX sockets that WebKit mounts inside its sandbox, and the sandboxed process remains otherwise confined. NOTE: this is similar to CVE-2021-41133.

CVSS Base Scores

version 3.1