CVE-2026-94445

High

Description

A malicious txtar could escape the intended execution context and force arbitrary writes to the playground host's trusted filesystem. Disjointly, one of the three possible paths to invoke go vet on the playground host did not correctly restrict the execution environment. This permitted a Go process to make a read for an environment configuration file rooted in the playground host's $HOME. Together, a well-crafted go env file and the go vet invocation could lead to remote code execution in the playground host itself. This does not affect users of go.dev/play directly; however, it may affect independent deployments of golang.org/x/playground.

SeverityHigh
CVSS8.8
Exploit probability—
ProductGolang.org/x/playground
PublishedSep 25, 2026
First seenSep 25, 2026

How to fix

Update
  • golang.org/x/playground golang.org/x/playground0.0.0-20260924211604-6d73cff14c17 or later

Affected products

ProductAffected versionsFixed in
golang.org/x/playground golang.org/x/playgroundv < 0.0.0-20260924211604-6d73cff14c170.0.0-20260924211604-6d73cff14c17

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