All vulnerabilities
CVE-2026-94445

Malicious user input may lead to RCE in golang.org/x/playground

golang.org/x/playground golang.org/x/playground
Open in ThreatlineRecord JSON
CVSS
8.8High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.36%Chance of exploitation activity in the next 30 days, higher than 28% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in0.0.0-20260924211604-6d73cff14c17Fixed versionCVE List
Published25 Sep 2026Updated 25 Sep 2026CVE List

What fixes it

  • 0.0.0-20260924211604-6d73cff14c17golang.org/x/playgroundCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 1

  • golang.org/x/playgroundaffected: all versions before 0.0.0-20260924211604-6d73cff14c17CVE List

References 2